Unit7 语法讲解及习题 Present continuous tense & Grammar Review 2025-2026学年鲁教版（2012）英语七年级上册

鲁教（五四制）英语七上Unit7语法讲解及习题 Present continuous tense & Grammar Review 一、核心语法详细讲解 （一）核心语法1：现在进行时 现在进行时用于描述此时此刻正在发生的动作，或现阶段正在进行的动作。 1. 核心含义与标志词 核心含义：此时此刻正在发生的动作（如：He is riding a skateboard now. 他现在正在玩滑板。） 高频标志词：now（现在）、look（看）、listen（听）（本单元重点），贴合课本对话场景。 示例 ： — What are you doing now? — I’m shopping at the supermarket. Listen, who is singing an English song? 2. 核心句式 句式类型 结构 例句 肯定句 主语 + am/is/are + 动词-ing + 其他 He is riding a skateboard.（他正在玩滑板。） 否定句 主语 + am/is/are + not + 动词-ing + 其他 He is not (isn’t) playing with matches.（他没在玩火柴。） 一般疑问句 Am/Is/Are + 主语 + 动词-ing + 其他？（回答：Yes, ... / No, ...） — Is she touching the hot iron? — No, she isn’t.（她在摸烫的熨斗吗？—— 没有。） 3. 动词-ing变化规则 一般情况：直接加-ing（如：play→playing, ride→riding, cook→cooking） 以不发音的e结尾：去e加-ing（如：take→taking, write→writing） 重读闭音节（辅+元+辅）：双写末尾辅音加-ing（如：run→running, swim→swimming ） 易错提醒 现在进行时必须有am/is/are，后面的动词必须加-ing（如：He is ride. 错误；He is riding. 正确）。 am/is/are的用法：I用am，you用are，he/she/it用is（复数主语也用are）。 （二）核心语法2：前单元语法复习 1. 一般过去时（复习） 核心用法：描述过去发生的危险经历或动作（如Peter的滑板摔倒经历），复习动词过去式。 例句：He fell off his skateboard last Saturday.（他上周六从滑板上摔下来了。） 核心句式：复习肯定句（主语+动词过去式）、否定句（didn’t+动词原形）、疑问句（Did+主语+动词原形）。 2. 不定代词（复习） 核心用法：指代不确定的人、事、物，贴合单元“询问危险经历”的语境。 例句：Did you see anything interesting at the Science Museum? 重点复习：anything（否定/疑问）、something（肯定）、everyone（每个人）。 3. Can/Could表请求与许可（复习） 核心用法：用于给出安全建议、提出请求（如请求他人帮忙避免危险）。 例句：Could you please get the ladder for me? 重点复习：Could you please+动词原形（请求帮忙）、You should+动词原形（给出建议）。 （三）单元核心交际句型 1. 询问他人正在做什么（现在进行时）：— What are you doing now? — I’m ... 2. 描述正在发生的危险动作：He/She is playing with matches.（他/她正在玩火柴。） 3. 给出安全建议：You should wear a helmet. / Don’t play with lighters. 4. 请求帮忙（避免危险）：Could you please get the ladder for me? 5. 描述过去的危险经历：I fell off my bike yesterday.（我昨天从自行车上摔下来了。） 二、习题 题型一：用所给动词的正确形式填空 1. Look! They ____________ (ride) skateboards in the park. It’s dangerous. 2. — What ____________ you ____________ (do) now? — I’m checking the gas stove. 3. She ____________ (not touch) the hot iron. She knows it’s dangerous. 4. Listen! Who ____________ (sing) an English song in the next room? 5. My brother ____________ (play) with a lighter. I must stop him. 6. — ____________ your mum ____________ (cook) now? — Yes, she is. She will turn off the gas later. 7. We ____________ (not walk) on the wet floor. It’s easy to fall. 8. He ____________ (hang) a picture on the wall. Let’s help him. 9. The children ____________ (play) near an open window. It’s not safe. 10. I ____________ (wear) my helmet. I’m going to ride a bike. 题型二：用所给动词的正确形式填空 1. Peter ____________ (fall) off his skateboard last Saturday. Luckily, he wasn’t hurt. 2. — Did you see ____________ (something) interesting at the museum? — No, nothing. 3. — Could you please ____________ (check) the gas stove? — Sure, I’ll do it right away. 4. We ____________ (visit) the Science Museum last week and saw many interesting things. 5. Everyone ____________ (enjoy) the school trip yesterday. 6. — Can you ____________ (help) me with my homework? — Sorry, I can’t. I’m busy. 7. She ____________ (not go) anywhere dangerous yesterday. She stayed at home. 8. My mum always reminds me ____________ (wear) a helmet when riding a bike. 9. He ____________ (roll) over and over when he fell off the skateboard. 10. — What did you do last weekend? — I ____________ (learn) some safety tips. 题型三：单项选择 1. — Look! What ______ they doing? — They are riding skateboards. It’s dangerous. A. is B. are C. do D. did 2. — ______ you please check the gas stove? — Sure, no problem. A. Can B. Do C. Did D. Will 3. Peter ______ off his skateboard last Saturday, but his helmet kept him safe. A. fall B. falls C. fell D. falling 4. — What are you doing now? — I ______ my helmet. I’m going to ride a bike. A. wear B. wears C. wearing D. am wearing 5. Did you see ______ dangerous in the park yesterday? A. anything B. something C. everything D. nothing 6. — Can you help me hang the picture? — ______, but I have to finish my homework first. A. Sorry, I can’t B. Sure C. No problem D. Yes, I can’t 7. She ______ playing with matches. It’s very dangerous. A. isn’t B. don’t C. didn’t D. not 8. We ______ the Science Museum last week and learned a lot about safety. A. visit B. visits C. visited D. are visiting 题型四：按要求改写句子 1. He is playing with a lighter.（改为否定句） _________________________________________________________________ 2. They are riding skateboards in the park.（改为一般疑问句并作否定回答） _________________________________________________________________ _________________________________________________________________ 3. Peter fell off his skateboard last Saturday.（对画线部分提问） _________________________________________________________________ 4. Could you please check the gas stove?（作肯定回答） _________________________________________________________________ 5. I am wearing my helmet now.（对画线部分提问） _________________________________________________________________ 题型五：情景对话补全（2题，每空一词 ） 1. A: Look! What ____________ Tom doing? B: He ____________ playing with matches. It’s very dangerous. A: ____________ you please stop him? B: Sure. Tom, don’t play with matches! You ____________ get hurt. C: Sorry, I won’t. 2. A: Hi, Peter. What ____________ you doing now? B: I ____________ checking my skateboard. I want to ride it this afternoon. A: Did you ____________ anything interesting yesterday? B: No, nothing. But I ____________ off my bike last week. Luckily, I wore a helmet. A: You should be more careful next time. 三、习题答案及 解析 题型一：现在进行时填空 1. are riding 2. are; doing 3. isn’t touching 4. is singing 5. is playing 2. Is; cooking 7. aren’t walking 8. is hanging 9. are playing 10. am wearing 解析：结合标志词look/listen/now，用现在进行时；注意am/is/are的用法，动词变-ing形式，否定句直接加not。 题型二：复习语法填空 1. fell 解析：last Saturday是过去标志，fall的过去式为fell（不规则）。 2. anything 解析：疑问句用anything，something用于肯定句。 3. check 解析：Could you please后接动词原形。 4. visited 解析：last week是过去标志，visit的过去式为visited。 5. enjoyed 解析：yesterday是过去标志，enjoy的过去式为enjoyed。 6. help 解析：Can you后接动词原形。 7. didn’t go 解析：yesterday是过去标志，否定句借助didn’t+原形go。 8. to wear 解析：remind sb. to do sth.（提醒某人做某事），固定搭配。 9. rolled解析：结合fell（过去式），roll用过去式rolled。 10. learned/learnt 解析：last weekend是过去标志，learn的过去式为learned或learnt。 题型三：单项选择 1. B 解析：主语they是复数，现在进行时用are，look是现在进行时标志。 2. A 解析：表礼貌请求，用Can/Could，结合选项，选Can，贴合单元语境。 3. C 解析：last Saturday是过去标志，fall的过去式为fell。 4. D 解析：now是现在进行时标志，用am wearing（I用am，动词加-ing）。 5. A 解析：疑问句，“任何危险的事情”用anything，贴合语境。 6. A 解析：结合后句“但我得先完成作业”，可知是否定回应，选Sorry, I can’t，语气委婉。 7. A 解析：现在进行时的否定句，主语she用isn’t，后接playing。 8. C 解析：last week是过去标志，visit的过去式为visited。 题型四：改写句子 1. He isn’t playing with a lighter. 解析：现在进行时否定句，在is后加not，缩写为isn’t，动词-ing形式不变。 2. — Are they riding skateboards in the park? — No, they aren’t. 解析：现在进行时一般疑问句，将are提至句首；否定回答用No, 主语+aren’t. 3. When did Peter fall off his skateboard? 解析：对时间提问用when，一般过去时借助did，fell变回原形fall。 4. Sure. / No problem. / Of course. 解析：Could you please的肯定回应，贴合单元交际语境，任选一种即可。 5. What are you doing now? 解析：对正在做的动作提问用what，现在进行时句式为What+am/is/are+主语+doing? 题型五：情景对话补全 1. is; is; Could/Can; could 解析：第一、二空，look标志现在进行时，Tom用is；第三空表礼貌请求，用Could/Can；第四空表推测“可能会受伤”，用could。 2. are; am; see; fell 解析：第一、二空，now标志现在进行时，you用are，I用am；第三空did后接原形see；第四空last week标志过去式，fell是fall的过去式。 四、单元语法核心总结 1. 现在进行时：描述正在发生的动作，标志词now/look/listen，结构：am/is/are+动词-ing，牢记动词-ing变化规则。 2. 复习语法：① 一般过去时（描述过去的危险经历，动词用过去式）；② 不定代词（anything/something等，区分肯定/否定/疑问）；③ Can/Could（请求帮忙、给出建议）。 3. 易错点：现在进行时不能少am/is/are；did后动词变原形；Could表请求，回答用can。 4. 核心语境：结合安全话题，灵活运用现在进行时描述危险动作、一般过去时描述危险经历。 ( 1 ) 学科网（北京）股份有限公司 $