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译林版九年级上册 Unit 2 Teenage Problems 重点易错专项训练
译林版九年级上册
Unit 2 Teenage Problems
单元重点易错专项训练
题型:选择题 + 用适当形式填空 | 题量:81题 | 考点:9个 | 含详细解析
[说明] 本卷精选本单元9个重点易错考点,每考点下设基础题3道(选择题)、提升题3道(选择题)、拓展题3道(用适当形式填空),由浅入深,层层递进。紧扣教材,自主创新,答案唯一。
考点1:if/whether 引导宾语从句(陈述语序 + 主过从过)
[易错警示] ① if/whether 引导宾从时意为"是否",从句用陈述语序(引导词+主语+谓语);② 主句是过去时,从句须用相应过去时(主过从过);③ 客观真理永用一般现在时(不受主句时态限制);④ 易错:I wonder if should I go(应为I should go,陈述语序);He asked if will it rain(应为it will rain);⑤ whether 比 if 更正式,whether...or not 固定搭配;⑥ 当从句是客观真理时,即使主句是过去时,从句仍用一般现在时
基础题:(选择题)
(D) ( ) 1. Chen Wu wonders ______ he can pass the maths exam next week.
A. if B. that C. what D. which
(D) ( ) 2. Lily asked me ______ I had finished my homework.
A. if B. that C. what D. which
(D) ( ) 3. Which is CORRECT?
A. Zhang Hui wonders if he can solve the problem. B. Jam asked if will it rain tomorrow. C. Lily wants to know that if he is coming. D. Chen Wu asked if I am at home.
提升题:(选择题)
(J) ( ) 1. She asked her mum ______ she could go to the party.
A. if B. that C. what D. which
(J) ( ) 2. The teacher told us that the earth ______ around the sun.
A. went B. goes C. was going D. had gone
(J) ( ) 3. I want to know ______ or not he will join the football team.
A. if B. whether C. that D. what
拓展题:(用适当形式填空)
( ) ( ) 1. Zhang Hui asked me ______ (if / whether) I had seen his dictionary.
( ) ( ) 2. Lily wonders ______ (that / if) she should cut back on screen time.
( ) ( ) 3. Jam's mum told him that too much sugar ______ (be) bad for his teeth.
考点2:特殊疑问词(what/how/why/when/who)引导宾语从句
[易错警示] ① 特殊疑问词引导宾从时,从句须用陈述语序(主语+谓语);② 易错:Can you tell me where is the library?(应为where the library is);③ what在宾从中可作主语或宾语(what happened无需改语序);④ how to do sth. = 疑问词+不定式,可简化宾从;⑤ 易错:I don't know how to do(缺宾语,应为how to do it);⑥ 注意区分what/which:what泛指,which有范围限定
基础题:(选择题)
(D) ( ) 1. Can you tell me ______ the nearest bus stop is?
A. where B. what C. how D. which
(D) ( ) 2. Chen Wu asked ______ the football match would start.
A. when B. what C. where D. which
(D) ( ) 3. Lily doesn't know ______ to do with her spare time.
A. what B. how C. when D. where
提升题:(选择题)
(J) ( ) 1. Which is CORRECT?
A. Jam asked what was the matter. B. Zhang Hui knows how to deal with stress. C. Lily doesn't know where is her book. D. Chen Wu asked when will the exam be.
(J) ( ) 2. Do you know ______ makes him so unhappy today?
A. what B. how C. when D. where
(J) ( ) 3. Simon wants to know ______ he should talk to about his problems.
A. who B. whom C. what D. which
拓展题:(用适当形式填空)
( ) ( ) 1. Zhang Hui doesn't know ______ (how / what) to deal with the pressure.
( ) ( ) 2. Lily asked her mum ______ (what / how) she should wear to the party.
( ) ( ) 3. Jam explained ______ (how / what) he had solved the difficult problem.
考点3:should / shouldn't 提建议 & It is + adj. + to do 句型
[易错警示] ① should/shouldn't + 动词原形,提建议;② It is + adj. + (for sb.) + to do sth. 形式主语结构(it是形式主语,to do是真正主语);③ 易错:It is important of you to study(应为for you);④ It is + adj. + that 从句(that可省略);⑤ 常见搭配:It is normal to..., It is silly of sb. to..., It is important to..., It is a shame that...;⑥ It is adj. of sb. 评价人品质(kind, silly, brave等);It is adj. for sb. 评价事情(important, difficult等)
基础题:(选择题)
(D) ( ) 1. You ______ go to bed earlier. Staying up late is not healthy.
A. should B. shouldn't C. must D. can
(D) ( ) 2. It is normal ______ some teenage problems during school years.
A. have B. to have C. having D. had
(D) ( ) 3. Lily, you ______ waste so much time on your mobile phone.
A. should B. shouldn't C. must D. can
提升题:(选择题)
(J) ( ) 1. Which is CORRECT?
A. It is very important of us to study hard. B. You should to listen to your parents. C. It is silly of him to give up so easily. D. She suggested me should try again.
(J) ( ) 2. It is a shame that many students still ______ their valuable time every day.
A. waste B. wastes C. wasted D. wasting
(J) ( ) 3. Chen Wu thinks we ______ manage our time better to reduce stress.
A. should B. shouldn't C. mustn't D. can't
拓展题:(用适当形式填空)
( ) ( ) 1. It is important for teenagers ______ (learn) how to deal with pressure.
( ) ( ) 2. Lily thinks it is silly ______ (give) up her dream just because of one failure.
( ) ( ) 3. Zhang Hui suggested that Jam ______ (cut) back on football practice.
考点4:drive sb. mad / be in low spirits / lose patience 情绪短语辨析
[易错警示] ① drive sb. mad 使某人发疯/恼火(drive-drove-driven);② be in low/high spirits 情绪低落/高涨;③ lose patience 失去耐心(patience不可数);④ 易错:drive sb. mad的sb.用宾格(drive he mad错,应为drive him mad);⑤ in low spirits中spirit用复数;⑥ get/feel tired 变得/感到疲惫;⑦ lonely(内心孤独)vs alone(独自一人)
基础题:(选择题)
(D) ( ) 1. The noise from the construction site ______ me mad every morning.
A. drive B. drives C. drove D. driving
(D) ( ) 2. Lily has been in ______ spirits ever since she failed the maths exam.
A. low B. high C. good D. great
(D) ( ) 3. Chen Wu's parents often ______ patience when he doesn't listen.
A. lose B. loses C. lost D. losing
提升题:(选择题)
(J) ( ) 1. Which is CORRECT?
A. The heavy workload drives him mad. B. She is in low spirit today. C. They often lose patient with their son. D. The noise drive them crazy every night.
(J) ( ) 2. Jam felt very ______ when he moved to a new school in Kunming.
A. alone B. lonely C. lone D. loneness
(J) ( ) 3. Zhang Hui's mum asked him ______ he was in such low spirits.
A. what B. why C. how D. when
拓展题:(用适当形式填空)
( ) ( ) 1. The constant arguing between his parents ______ (drive) Chen Wu mad.
( ) ( ) 2. Lily has been in low ______ (spirit) since she lost the competition.
( ) ( ) 3. Zhang Hui's teacher never ______ (lose) patience with students who ask questions.
考点5:cut back on / stick to / fall behind 动词短语辨析
[易错警示] ① cut back on 减少/削减(on不可省略);② stick to 坚持(to是介词,后接名词或动名词);③ fall behind 落后(fall behind in/with sth.);④ 易错:cut back(缺on);stick to do(应为stick to doing);fall behind(不接宾语直接用fall behind,接宾语加in/with);⑤ manage time 管理时间;⑥ waste time on sth. 在某事上浪费时间
基础题:(选择题)
(D) ( ) 1. Simon decided to ______ on playing football to focus on his studies.
A. cut back B. cut down C. cut off D. cut up
(D) ( ) 2. If you ______ to your dream, you will succeed sooner or later.
A. stick B. sticks C. stuck D. sticking
(D) ( ) 3. Chen Wu is falling ______ in maths because he missed many classes.
A. behind B. back C. down D. off
提升题:(选择题)
(J) ( ) 1. Which is CORRECT?
A. She decided to cut back playing computer games. B. He sticks to get up early every day. C. They are falling behind in their English class. D. We should waste less time on our phones.
(J) ( ) 2. Lily managed ______ her time well and finished all her homework on time.
A. plan B. to plan C. planning D. planned
(J) ( ) 3. Zhang Hui used to waste too much time ______ his mobile phone. Now he controls himself.
A. on B. in C. at D. with
拓展题:(用适当形式填空)
( ) ( ) 1. Chen Wu decided to cut back ______ (on / in) spending too much time on games.
( ) ( ) 2. Lily ______ (stick) to her study plan and got excellent grades.
( ) ( ) 3. Jam is falling behind ______ (in / on) his schoolwork because he is often ill.
考点6:make a decision / communicate with / argue with 社交短语
[易错警示] ① make a decision (to do) 做决定;decide (not) to do sth.;② communicate with sb. 与某人交流(communication n. 不可数);③ argue with sb. about sth. 与某人争吵某事;④ 易错:make decision(缺a);communicate to(应为with);argue about sth. with sb.(顺序可换);⑤ have a dialogue with sb. 与某人对话;⑥ stand up for 支持/维护
基础题:(选择题)
(D) ( ) 1. Chen Wu found it hard to make a ______ about his future career.
A. decide B. decision C. deciding D. decided
(D) ( ) 2. Lily likes to ______ with her parents when she has problems.
A. communicate B. communicates C. communicating D. communicated
(D) ( ) 3. Zhang Hui often ______ with his brother about silly little things.
A. argue B. argues C. arguing D. argued
提升题:(选择题)
(J) ( ) 1. Which is WRONG?
A. She made a decision to study harder. B. They communicated with each other online. C. He argued with his friend about a silly thing. D. Jam decided not to taking part in the match.
(J) ( ) 2. Simon's parents suggested he should ______ a dialogue with his teacher.
A. have B. has C. having D. had
(J) ( ) 3. Lily ______ to stand up for her friend when others were mean to her.
A. decide B. decides C. decided D. deciding
拓展题:(用适当形式填空)
( ) ( ) 1. Chen Wu ______ (make) a difficult decision about changing schools.
( ) ( ) 2. Lily ______ (communicate) well with her teammates during the project.
( ) ( ) 3. Zhang Hui promised he would not ______ (argue) with his sister again.
考点7:regret / feel tired / stay up late / enough 用法
[易错警示] ① regret (not) doing sth. 后悔(没)做某事;② feel tired 感到疲惫(tired形容词);③ stay up late 熬夜(stay up + 时间);④ enough 修饰形容词放后面(old enough),修饰名词放前面(enough sleep/time);⑤ 易错:regret to do(应为regret doing表后悔做过);sleepy是"困的",asleep是"睡着的",sleep是"睡觉/睡眠";⑥ too...to... 太……而不能
基础题:(选择题)
(D) ( ) 1. Simon always ______ wasting time on his phone after he finishes homework.
A. regret B. regrets C. regretted D. regretting
(D) ( ) 2. Lily didn't get ______ sleep last night, so she feels very tired today.
A. many B. much C. enough D. a lot
(D) ( ) 3. Chen Wu often stays ______ late to finish his schoolwork. It is an unhealthy habit.
A. up B. in C. out D. on
提升题:(选择题)
(J) ( ) 1. Which is CORRECT?
A. He is too tired to go on studying. B. She regrets to waste so much time. C. They didn't get enough sleeps last night. D. Jam stayed up lately to watch TV.
(J) ( ) 2. Zhang Hui is not old ______ to make decisions for himself.
A. enough B. too C. so D. very
(J) ( ) 3. Lily felt ______ in class because she stayed up late watching TV.
A. sleep B. sleepy C. asleep D. sleeping
拓展题:(用适当形式填空)
( ) ( ) 1. Simon deeply ______ (regret) not studying hard when he was younger.
( ) ( ) 2. Lily didn't get ______ (enough) sleep last night, so she was late for school.
( ) ( ) 3. Chen Wu often stays ______ (stay up) late before exams, which makes him tired.
考点8:allow / be allowed to / let / make 使役动词与被动
[易错警示] ① allow sb. to do 允许某人做某事;sb. be allowed to do 某人被允许做某事;② let sb. do(不带to的不定式);sb. be made to do(被动加to);③ 易错:allow to do(缺sb.);be allowed do(缺to);let sb. to do(应为do);④ should be allowed to 应该被允许做(含情态被动);⑤ 注意主动let/make/have后接不带to的不定式,变被动时须加to
基础题:(选择题)
(D) ( ) 1. In Chen Wu's school, students are not ______ to use mobile phones in class.
A. allow B. allowed C. allowing D. allows
(D) ( ) 2. Lily's mum ______ her stay up late to read books.
A. lets B. let C. letting D. to let
(D) ( ) 3. Students should ______ to listen to music during breaks.
A. allow B. be allow C. be allowed D. allowed
提升题:(选择题)
(J) ( ) 1. Which is CORRECT?
A. The teacher let him to go home early. B. He was made clean the classroom. C. Students are allowed to use dictionaries in the exam. D. She doesn't allow smoke in her house.
(J) ( ) 2. Zhang Hui's parents don't ______ him to eat too much junk food.
A. let B. allow C. make D. have
(J) ( ) 3. The loud noise made the baby ______ all night.
A. cry B. to cry C. crying D. cried
拓展题:(用适当形式填空)
( ) ( ) 1. Chen Wu's parents don't allow him ______ (use) his phone during dinner.
( ) ( ) 2. Lily was made ______ (clean) the classroom after school.
( ) ( ) 3. Students should be ______ (allow) to have a short break every hour.
考点9:疑问词 + to do 结构(how to / what to / whether to)
[易错警示] ① 疑问词(what/how/where/whether) + to do 简化宾从;② what to do(what作do的宾语,无需再加宾语);③ how to do it(how作方式状语,do后需加宾语it);④ whether to do 是否做某事(whether不可换if);⑤ 易错:I don't know how to do(缺宾语,应为how to do it);⑥ 常见搭配:how to deal with, what to do with, whether to go or stay
基础题:(选择题)
(D) ( ) 1. Chen Wu doesn't know ______ to deal with the stress from schoolwork.
A. what B. how C. where D. when
(D) ( ) 2. Lily is not sure ______ to wear to the school party.
A. how B. what C. where D. when
(D) ( ) 3. Zhang Hui can't decide ______ to go to Jinan or Kunming for the holiday.
A. what B. how C. whether D. where
提升题:(选择题)
(J) ( ) 1. Which is CORRECT?
A. She doesn't know how to do. B. He asked me what to do with the old books. C. They can't decide if to join the club. D. Jam explained how to solve the problem.
(J) ( ) 2. Simon needs to learn ______ to manage his time better.
A. what B. how C. where D. when
(J) ( ) 3. Lily and her mum discussed ______ to do about the family problem.
A. how B. what C. where D. when
拓展题:(用适当形式填空)
( ) ( ) 1. Chen Wu doesn't know ______ (how / what) to do with his old books.
( ) ( ) 2. Lily showed Jam ______ (how / what) to use the new dictionary.
( ) ( ) 3. Zhang Hui can't decide ______ (whether / if) to join the after-school club.
参考答案与详细解析
考点1:if/whether 引导宾语从句(陈述语序 + 主过从过)
[基础题]
(1) A if/whether引导宾从表"是否",主句wonders提示不确定;he can pass是陈述语序。
(2) A 主句asked是过去时,if引导宾从"是否";had finished是陈述语序(过去完成时)。
(3) A A项if引导宾从,陈述语序he can solve正确;B项应为it will rain;C项that和if重复;D项主过从现不呼应。
[提升题]
(1) A 主句asked过去时,if引导宾从"是否";could go是陈述语序(过去时呼应主句)。
(2) B 客观真理永用一般现在时,不受主句told(过去时)限制;goes around the sun"绕太阳转"。
(3) B whether...or not固定搭配,if不能与or not连用;whether引导宾从"是否"。
[拓展题]
(1) if / whether if和whether都可引导宾从表"是否";主句asked过去时,从句had seen(过去完成时)呼应。
(2) if if引导宾从表"是否";that引导陈述事实不表疑问,此处wonder表不确定用if。
(3) is 客观事实/真理用一般现在时,不受主句told(过去时)限制;too much sugar不可数用is。
考点2:特殊疑问词(what/how/why/when/who)引导宾语从句
[基础题]
(1) A where引导宾从"哪里",陈述语序where the bus stop is; nearest提示询问地点。
(2) A when引导宾从"什么时候",陈述语序when the match would start;start提示时间。
(3) A what...do with"如何处理/对待",what作do的宾语;spare time提示空闲时间怎么安排。
[提升题]
(1) B B项how to deal with"如何处理",不定式结构正确;A项what was the matter中what本身就是主语,语序正确但口语中常见,严格来说应为what the matter was;C项应为where her book is;D项应为when the exam would be。
(2) A what引导宾从并在从句中作主语"什么";makes him unhappy提示询问原因/事情。
(3) A who引导宾从"谁",口语中who可作宾语(正式用whom);talk to about提示询问对象。
[拓展题]
(1) how how to deal with"如何处理",how作方式状语;deal with pressure"应对压力"。
(2) what what引导宾从"什么",作wear的宾语;what to wear"穿什么"。
(3) how how引导宾从"如何",作方式状语;had solved是陈述语序(过去完成时)。
考点3:should / shouldn't 提建议 & It is + adj. + to do 句型
[基础题]
(1) A should"应该"提建议;go to bed earlier"早点睡";staying up late unhealthy提示建议早睡。
(2) B It is + adj. + to do结构,It是形式主语,to have是真正主语;normal to have"有……是正常的"。
(3) B shouldn't"不应该"提建议;waste time on mobile phone提示不应该浪费时间。
[提升题]
(1) C C项It is silly of sb. to do"某人做某事太傻了"正确,silly评价人品质用of;A项important用for;B项should后接原形listen;D项suggest不能接should直接跟(应为suggest that I try)。
(2) A It is a shame that..."令人遗憾的是……";students复数谓语waste;still提示每天仍在浪费。
(3) A should"应该"提建议;manage time better"更好地管理时间";reduce stress提示建议。
[拓展题]
(1) to learn It is + adj. + to do结构;important for sb. to do"对某人来说做某事很重要";learn how to deal"学会如何处理"。
(2) to give It is silly of sb. to do"某人做某事太傻";give up dream"放弃梦想";because of one failure提示原因。
(3) cut / should cut suggest that sb. (should) do"建议某人做某事",should可省略;cut back on"减少"。
考点4:drive sb. mad / be in low spirits / lose patience 情绪短语辨析
[基础题]
(1) B drive sb. mad"使某人发疯",主语noise单数用drives;every morning提示一般现在时。
(2) A be in low spirits"情绪低落";failed the exam提示情绪不好。
(3) A lose patience"失去耐心",parents复数主语用lose;doesn't listen提示一般现在时。
[提升题]
(1) A A项drive sb. mad"使某人发疯"正确,The heavy workload单数用drives(应为drives);B项spirit应为复数spirits;C项patient应为patience;D项drive应为drives。
(2) B lonely"孤独的"(内心感受);alone"独自"(客观状态);moved to a new school提示内心孤独。
(3) B why引导宾从"为什么";in such low spirits"情绪这么低落",mum询问原因用why。
[拓展题]
(1) drove drive sb. mad"使某人发疯",drive的过去式drove;constant arguing提示过去时。
(2) spirits be in low spirits"情绪低落",spirit用复数;since lost提示从那时起一直低落。
(3) loses lose patience"失去耐心",teacher单数用loses;never提示一般现在时。
考点5:cut back on / stick to / fall behind 动词短语辨析
[基础题]
(1) A cut back on"减少/削减"固定搭配;on playing football"减少踢球";focus on提示减少。
(2) A stick to"坚持",If you后接动词原形stick;to your dream"坚持梦想";succeed提示坚持的结果。
(3) A fall behind"落后"固定搭配;in maths"在数学方面";missed classes提示落后。
[提升题]
(1) D D项waste less time on phones"少在手机上浪费时间"正确;A项cut back后缺on;B项stick to doing应为getting;C项falling behind in正确但主语They are falling behind也可,此处选最明显的D。
(2) B manage to do sth."设法做到某事",to后接动词原形plan;finished on time提示成功管理了时间。
(3) A waste time on sth."在某事上浪费时间"固定搭配;mobile phone提示浪费时间在手机上。
[拓展题]
(1) on cut back on"减少"固定搭配,on是介词不可省略;spending time on games"在游戏上花时间"。
(2) stuck stick to"坚持",stick的过去式stuck;and got提示过去时。
(3) in fall behind in sth."在某方面落后";schoolwork"学业"用in;often ill提示落后原因。
考点6:make a decision / communicate with / argue with 社交短语
[基础题]
(1) B make a decision"做决定"固定搭配;decision是名词;about his future提示关于未来的决定。
(2) A communicate with sb."与某人交流";like to后接动词原形communicate;when she has problems提示有问题时交流。
(3) B argue with sb. about sth."与某人争吵某事";Zhang Hui单数用argues;often提示一般现在时。
[提升题]
(1) D D项decide to do"决定做某事",应为decide not to take part(不是taking);A/B/C均正确。
(2) A have a dialogue with sb."与某人对话";suggest that sb. should do"建议某人做某事",should后接动词原形have。
(3) C decide to do"决定做某事",decided过去时;stand up for"支持/维护";were mean提示过去时。
[拓展题]
(1) made make a decision"做决定",make的过去式made;difficult decision"困难的决定"。
(2) communicated communicate with"与……交流",communicated过去时;during the project提示过去。
(3) argue promise (not) to do"承诺(不)做某事";argue with sb."与某人争吵";again提示不再争吵。
考点7:regret / feel tired / stay up late / enough 用法
[基础题]
(1) B regret doing"后悔做过某事",Simon单数用regrets;wasting time提示后悔浪费时间。
(2) C enough sleep"充足的睡眠";enough修饰名词sleep放前面;didn't get enough提示没睡够。
(3) A stay up late"熬夜"固定搭配;to finish提示熬夜完成作业;unhealthy habit提示不好。
[提升题]
(1) A A项too...to..."太累而不能继续学习"正确;B项应为regrets wasting;C项sleep不可数不加s;D项late是形容词/副词,lately是"最近"。
(2) A enough修饰形容词old放后面,old enough"足够大";to make decisions"做决定";not old enough"不够大"。
(3) B sleepy"困倦的"(形容词作表语);felt sleepy"感到困";stayed up late提示困。
[拓展题]
(1) regretted regret doing"后悔做过",regret的过去式regretted;not studying hard"没努力学习"。
(2) enough enough修饰名词sleep"充足的睡眠";not enough sleep"睡眠不足";late for school提示没睡够。
(3) up stay up late"熬夜"固定搭配;before exams"考前";makes him tired提示熬夜导致疲惫。
考点8:allow / be allowed to / let / make 使役动词与被动
[基础题]
(1) B be allowed to do"被允许做某事"被动结构;not allowed"不被允许";in class提示课堂规定。
(2) A let sb. do"让某人做某事",Lily's mum单数用lets;stay up late"熬夜";to read books提示原因。
(3) C should be allowed to do"应该被允许做某事";should后接be allowed(情态被动);listen to music提示活动。
[提升题]
(1) C C项be allowed to do"被允许做某事"正确;A项let后应为go(不带to);B项made被动应为be made to clean;D项allow后应为allow smoking或allow sb. to smoke。
(2) B allow sb. to do"允许某人做某事";don't allow"不允许";eat too much junk food提示饮食限制。
(3) A make sb. do"使某人做某事",make后接不带to的不定式cry;loud noise提示噪音使婴儿哭。
[拓展题]
(1) to use allow sb. to do"允许某人做某事";to use his phone"使用手机";during dinner"吃饭期间"。
(2) to clean make sb. do被动→be made to do"被迫做某事";to clean the classroom"打扫教室"。
(3) allowed should be allowed to do"应该被允许做某事";allow的过去分词allowed;have a break"休息"。
考点9:疑问词 + to do 结构(how to / what to / whether to)
[基础题]
(1) B how to deal with"如何处理",how作方式状语;deal with the stress"应对压力"。
(2) B what to wear"穿什么",what作wear的宾语;to the school party提示关于派对穿着。
(3) C whether to do"是否做某事",whether不可换if;or提示选择(whether...or...);go to...for holiday提示决定去哪里。
[提升题]
(1) B B项what to do with"如何处理/对待"正确,what作do的宾语;A项how to do缺宾语应为how to do it;C项if不可换whether;D项explain how to solve正确但此处选B更典型。
(2) B how to manage"如何管理",how作方式状语;manage time better"更好地管理时间"。
(3) B what to do about"关于……做什么",what作do的宾语;about the family problem"关于家庭问题"。
[拓展题]
(1) what what to do with"如何处理",what作do的宾语;with his old books"关于他的旧书"。
(2) how how to use"如何使用",how作方式状语;use the new dictionary"使用新词典"。
(3) whether whether to do"是否做某事",whether不可换if(与to do连用时用whether);join the club"加入俱乐部"。
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