内容正文:
Unit Two Stay Safe and Healthy
专题02 语法提升·易错题专项训练
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1.情态动词 should / shouldn’t
2.一般过去时
3.提建议句型(健康、安全劝告对话核心句型)
4.if 引导条件状语从句
5.综合训练
高频易错点、易错点提示、小练笔、答题点拨
易错精讲
情态动词 should / shouldn’t高频易错点01
一、概念
should 意为“应该”,shouldn’t = should not 意为“不应该”,用来给出安全、健康、规则类劝告;情态动词后必须加动词原形,不受人称、时态变化影响。
二、句型结构:
结构
例句
1. 肯定句:主语 + should + 动词原形 + 其他
We should wear a helmet.(我们应该佩戴头盔。)
2. 否定句:主语 + shouldn’t + 动词原形 + 其他
You shouldn’t ride too fast.(骑车速度不应过快。)
3. 一般疑问句:Should + 主语 + 动词原形 + 其他?
回答:Yes, 主语 + should. / No, 主语 + shouldn’t.
Should he stay on the right side of the road?(他是否应该留在道路的右侧?)
Yes, he should. / No, he shouldn’t.(是的,他应该这样做。/ 不,他不应该这样做。)
易错点提示
1. 容易在should后加动词三单/过去式/ing,情态动词后永远用原形
2. 否定缩写不要漏n’t,不要写成should not’t;
3. 回答问句时主语要对应,问句you,答句I;问句he,答句he。
经典例题
We ____ play with matches. It’s very dangerous.
A. should B. shouldn’t C. can
点拨
答案:B
【解析】句意:我们不应该玩火柴。它是危险的。 根据句意“我们____玩火柴,很危险”,火柴是危险物品,所以填“不应该”;should后接动词原形play,完全匹配语法规则。A“应该”逻辑相反,can表能够,不符合劝告语境。
小练笔 01
一、用should / shouldn’t 填空。
1. You ________ wear a helmet when you ride a bike.
2. They ________ listen to music with headphones on bikes. It’s unsafe.
3. ________ we cover our mouth with wet cloth in a fire?
4. Mike ________ eat too much food after lunch.
5. She ________ open the door for strangers at home.
二、按要求改写句子。
6. We should stay on the right side of road.(改为否定句)
7. You should do sports after meals.(改为一般疑问句,并做否定回答)
8. He should call 119 when he sees a fire.(改为一般疑问句,并做肯定回答)
9. They should brush teeth every day.(改为否定句)
10. I should say no to bad touch.(一般疑问句+肯定回答)
一般过去时高频易错点02
一、概念:
描述上周、昨天、昨晚等过去时间发生的动作、状态,动词需要变为过去式;课文标志性时间词:last weekend, yesterday, last night。
二、句型结构:
结构
例句
1. 肯定句:主语 + 动词过去式 + 其他
He broke his leg last weekend. (上周末他的腿骨折了。)
2. 否定句:主语 + didn’t + 动词原形 + 其他
He didn’t ride slowly.(他并没有骑得很慢。)
3. 特殊疑问句:疑问词 + did + 主语 + 动词原形 + 其他?
How did that happen to him?(这种情况究竟是如何发生在他的身上的?)
易错点提示
1. did / didn’t 后面必须还原动词原形,很多学生依旧写过去式
2.不规则动词过去式死记:break-broke, fall-fell, ride-rode, have-had
3.句中有last/yesterday等过去标志词,动词必须变过去式,不能用原形。
经典例题
—Why didn’t Yangyang come to school?
—He ____ off his bike last weekend.
A. fall B. fell C. falls
点拨
答案: B
【解析】句意:Yangyang为什么没有来学校?他上周骑车摔倒了。时间标志last weekend是过去时间,动词用过去式;fall不规则变化fell。A原形、C三单都不能用于过去时间。
小练笔 02
一、用所给单词的正确形式填空。
1. He ________ (ride) a bike too fast and fell down yesterday.
2. Yangyang ________ (break) his right leg last weekend.
3. Peter ________ (fall) off the bike last Friday.
4. Mike ________ (have) a stomachache after eating too much last Monday.
5. Joe ________ (listen) to music when he rode the bike yesterday.
二、句型转换。
6. He rode a bike in the park last weekend.(改为否定句)
________________________________________________________________________________
7. I had a lot of cake yesterday.(改为一般疑问句)
________________________________________________________________________________
8. They played football after lunch.(对划线部分提问)
________________________________________________________________________________
9. She wore a helmet that day.(一般疑问句+否定回答)
________________________________________________________________________________
10. Did you eat ice cream after sports?(完整否定回答)
________________________________________________________________________________
提建议句型(健康、安全劝告对话核心句型)高频易错点03
一、概念:
提建议句型,用于医生、同学之间给出安全/健康办法,同义句转换是易错题。
二、句型结构:
结构
例句
1. You should / shouldn’t do…(最基础)
You should wear a helmet when you ride a bike.(你骑自行车时应该佩戴头盔。)
2. It’s better to do sth. 最好做某事(课文原句It’s Better to Eat Right and Play Smart)
It’s better to wear a helmet when you ride a bike.(骑自行车最好戴上头盔。)
3. Why not do sth.? = Why don’t you do sth.? 为什么不……?
Why not wear a helmet when you ride a bike? = Why don’t you wear a helmet when you ride a bike?(你骑车的时候为什么不戴上头盔呢?)
易错点提示
1.It’s better to 后面+动词原形,不能加doing;
2.Why not 直接加动词原形,不加to;Why don’t you 后也加原形。
3.三类句型同义转换时,不能改变原句劝告逻辑。
经典例题
It’s better ____ sports after one hour of meal.
A. do B. to do C. doing
点拨
答案:B
【解析】句意:用餐一小时后进行体育活动效果更佳。固定句型 It’s better to + 动词原形,表示“最好做某事”,是课文原句核心结构。
小练笔 03
一、同义句转换。
1. You should wear a helmet.(用It’s better to改写)
________________________________________________________________________________
2. It’s better not to play with fire.(用shouldn’t改写)
________________________________________________________________________________
3. You should cover your nose with wet cloth.(用Why not改写)
________________________________________________________________________________
4. Why don’t you wash your hands often?(用should改写)
________________________________________________________________________________
5. It’s better to follow bike rules.(用Why not改写)
________________________________________________________________________________
二、选词填空(should / It’s better to / Why not)。
6. ________ tell your teachers about bad touch?
7. ________ stay on the right when you ride.
8. You ________ not drink cold water after sports.
9. ________ make a family fire safety plan together.
10. ________ ________go with strangers. It’s dangerous.
if 引导条件状语从句高频易错点04
一、概念:
if 意为“如果”,引导假设条件,描述“如果发生某事,我们就要做某事”。
二、句型结构:
结构
例句
主句(劝告/命令 should / 祈使句)+ if + 一般现在时从句
If your building is on fire, cry “Fire!”(如果您的建筑物着火,请立即喊“着火了!”)
易错点提示
1.if从句用一般现在时,主句用劝告句型(should / 祈使句),不能两边都用将来时;
2.if放句首,从句末尾加逗号;if放中间不用逗号。
经典例题
If you ____ a stranger following you, you ____ cry for help.
A. see; should B. will see; should C. see; shouldn’t
点拨
答案:A
【解析】句意:如果你发现有陌生人尾随你,应立即呼救。if从句用一般现在时see;句意:如果看见陌生人尾随,你应该呼救,逻辑用should。
小练笔 04
一、用所给词正确形式填空。
1. If there ________ (be) smoke, you ________ (cover) your mouth.
2. If a stranger ________ (want) gifts from you, you ________ (not take) them.
3. If you ________ (ride) a bike, you ________ (wear) a helmet.
4. If you ________ (have) a toothache, you ________ (not eat) too much candy.
5. If the building ________ (catch) fire, you ________ (use) stairs.
二、合并句子,用if连接。
6. You see fire. Call 119 at once.
________________________________________________________________________________
7. Strangers ask your home address. Don’t tell them.
________________________________________________________________________________
8. You finish sports. Don’t drink ice water right away.
________________________________________________________________________________
9. Someone touches you uncomfortably. Say no and run away.
________________________________________________________________________________
10. You ride bikes. Stay on the right side.
________________________________________________________________________________
综合训练
一、单项选择。
( ) 1. Yangyang ____ his leg last weekend, so he didn’t go to school.
A. break B. broke C. breaks
( ) 2. You ____ take the lift when there is a fire.
A. shouldn’t B. should C. can
( ) 3. It’s better ____ hands after touching pets.
A. wash B. to wash C. washing
( ) 4. If you ____ a bad touch, you ____ tell your parents.
A. feel; should B. will feel; should C. feel; shouldn’t
( ) 5. —Did you wear a helmet yesterday?
—Yes, I ____.
A. do B. did C. should
二、从方框内选择合适的单词并用正确形式填空,每个词只能用一次。
should shouldn’t fell if better
1. Peter ____________ off his bike because he rode with one hand.
2. ____________ you meet strangers alone, don’t talk to them.
3. We ____________ follow three bike rules to keep safe.
4. It’s ____________ to sleep well to stop headache.
5. You ____________ play with matches, it starts fire easily.
三、连词成句。
1.last, he, bike, fast, rode, weekend (.)
2. wear, we, helmets, should, ride, when,we,bikes (.)
3.better, it’s, not, eat, too much, to (.)
4.if, fire, cry, you, see, “Fire” (.)
5.didn’t, Mike, after, sports, ice cream, eat (.)
四、句型转换。
1. We should call 119 in fire.(否定句+一般疑问句)
________________________________________________________________________________
2. He fell off the bike last week.(一般过去时一般疑问句+肯定回答)
________________________________________________________________________________
3. It’s better to make a fire plan.(用Why not改写同义句)
________________________________________________________________________________
4. If you see strangers, don’t open the door.(改为主语you should…句型)
________________________________________________________________________________
5. I had a stomachache yesterday.(对had a stomachache提问)
________________________________________________________________________________
五、情景交际。选出合适的句子补全对话。
A. What did you eat for lunch?
B. You shouldn’t do sports right after meals.
C. I have a bad stomachache.
D. It’s better to eat little each time.
E. Did you play football after lunch?
Doctor: Hello, boy. How can I help you?
Mike: 1. ____
Doctor: Let me check. 2. ____
Mike: I ate lots of rice, meat and cake.
Doctor: 3. ____
Mike: Yes, I played football with friends.
Doctor: Oh, that’s bad. 4. ____ And 5. ____ Don’t eat too much one time.
Mike: Thank you, doctor.
六、阅读绘本,选择正确的描述。
Last Sunday, Yangyang rode his bike in the park. He didn’t wear a helmet and rode very fast. Soon he fell off the bike and broke his right leg. Now he stays in hospital.
Baobao tells Mike three bike rules: First, always wear a helmet. Second, stay on the right of road. Third, ride slowly and carefully. They want to tell all classmates the rules to keep safe.
( )1. When did Yangyang have the accident?
A. Last Monday B. Last Sunday C. Yesterday
( )2. Why did Yangyang fall down?
A. He rode too fast without helmet.
B. He rode on the left side.
C. He listened to music.
( )3. How many bike rules does Baobao talk about?
A. Two B. Three C. Four
( )4. Where is Yangyang now?
A. Park B. School C. Hospital
( )5. What will Mike and Baobao do next?
A. Ride bikes fast.
B. Tell friends bike safety rules.
C. Play in the park.
七、阅读短文,完成相应的任务。
Fire can help us, but it’s dangerous too. Here are three fire safety tips.
First, never play with matches or candles. They can make big fire. Second, make a family fire plan with your family, and practice it together. Third, if your building is on fire, shout “Fire!”. Cover your mouth and nose with wet cloth, take stairs not lift. Run out quickly. When you get to safe place, call 119 and wait for firemen.
任务一:判断正(T)误(F)
( )1. We can play with candles for fun.
( )2. When building is on fire, we can take the lift to run away.
( )3. We need to make a family fire safety plan.
任务二:简答
4. What can we use to cover our mouth in fire?
________________________________________________________________________________
5. What number can we call for fire help?
________________________________________________________________________________
参考答案
小练笔 01
1. should 2. shouldn’t 3. Should 4. shouldn’t 5. shouldn’t
6. We shouldn’t stay on the right side of the road.
7. Should you do sports after meals? No, I shouldn’t.
8. Should he call 119 when he sees a fire? Yes, he should.
9. They shouldn’t brush teeth every day.
10. Should I say no to bad touch? Yes, you should.
小练笔 02
1. rode 2. broke 3. fell 4. had 5. listened
6. He didn’t ride a bike in the park last weekend.
7. Did you have a lot of cake yesterday?
8. What did they do after lunch?
9. Did she wear a helmet that day? No, she didn’t.
10. No, I didn’t.
小练笔 03
1. It’s better to wear a helmet.
2. You shouldn’t play with fire.
3. Why not cover your nose with wet cloth?
4. You should wash your hands often.
5. Why not follow bike rules?
6. Why not 7. It’s better to 8. should 9. It’s better to 10. You shouldn’t
小练笔 04
1. is; should cover
2. wants; shouldn’t take
3. ride; should wear
4. have; shouldn’t eat
5. catches; should use
6. If you see fire, you should call 119 at once.
7. If strangers ask your home address, don’t tell them.
8. If you finish sports, you shouldn’t drink ice water right away.
9. If someone touches you uncomfortably, say no and run away.
10. If you ride bikes, you should stay on the right side.
综合训练
一、单项选择。
1.B 2.A 3.B 4.A 5.B
二、从方框内选择合适的单词并用正确形式填空,每个词只能用一次。
1. fell 2. If 3. should 4. better 5. shouldn’t
三、连词成句。
1. He rode a bike fast last weekend.
2. We should wear helmets when we ride bikes.
3. It’s better not to eat too much.
4. If you see fire, cry “Fire”.
5. Mike didn’t eat ice cream after sports.
四、句型转换。
1. 否定:We shouldn’t call 119 in fire. 疑问:Should we call 119 in fire?
2. Did he fall off the bike last week? Yes, he did.
3. Why not make a fire plan?
4. If you see strangers, you shouldn’t open the door.
5. What was wrong with you yesterday?
五、情景交际。选出合适的句子补全对话。
1.C 2.A 3.E 4.B 5.D
六、阅读绘本,选择正确的描述。
1.B 2.A 3.B 4.C 5.B
七、阅读短文,完成相应的任务。
任务一:
1.F 2.F 3.T
任务二:
4. We can use wet cloth.
5. We can call 119.
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