Unit 2 语法（知识清单） -2023-2024学年英语三年级下册单元速记·巧练系列（译林版三起）.docx

1、Unit 2 In the library语法精讲精练(含答案)一、否定祈使句1. 否定祈使句l 否定祈使句一般用来表示劝说、禁止或警告等。基本结构为: l Dont + 动词原形(+其他). 意为“不要做某事”。l 回答可以是“ Im sorry./All right./OK./Yes.”等。如: Dont shout in the library. 不要在图书馆喊叫。2.肯定祈使句变否定祈使句(1)通常在肯定祈使句的动词前面加“dont”。如: Run! 快跑! Dont run! 不要跑!(2) let引导的祈使句，否定形式在动词前加 not。如: Lets go to the zoo我

2、们去动物园吧。Lets not go to the zoo. 我们不要去动物园。3.否定祈使句的其他形式(1) No+动词-ing. 如:No parking. 禁止停车。No smoking. 禁止吸烟。(2) No+可数名词复数. 如:No photos. 禁止拍照。 语法提优练1一、单项选择。( )1._ eat on the underground.A. No B. Not C. Dont( )2. Dont talk here._A. Yes, please.B. Im sorry.C. How nice!( )3._ the window. Its too cold.A. Plea

3、se openB. Dont openC. Dont close二、按要求完成句子。1. Talk in class.(改为否定句)_ _in class.2. Dont listen to the parrot.(改为定句)_ _the parrot.3. Open the window, please.(写出义句)_ the window, please.二、用 “Would you like.?” 征求对方意见1. 含义“Would you like.?”用于询问对方是否愿意做某事或是否想要某物，意为“你愿意吗?/你想要吗?”。l “Would you like”后面既可以加名词、名词短

4、语l “Would you like”又可以加不定式“to do sth.”。意为 “想要去做某事”如: Would you like an ice cream? = Would you like to have an ice cream? 你想吃个冰淇淋吗?2. 回答对“Would you like.?”进行回答时l 肯定回答为“Yes, please.”,意为“好的, 太感谢了。”l 否定回答为“ No, thanks/thank you.”, 意为“不了, 谢谢。”如:Would you like a new T-shirt? 你想要一件新T恤衫吗? Yes, please. 好的,太感

5、谢了。/No,thanks. 不了,谢谢。3. would like 与 wantwould like中的would是情态动词。可将would like 看作一个整体,此时它的用法与want 类似。询问对方是否想要某物时,还可以用“Do you want.?”。如: Would you like a cake? = Do you want a cake? 你想要一个蛋糕吗? 语法提优练2一、用所给单词的正确形式填空。1. _(would) you like an apple pie?2. _(do) your sister like animals?3. John would like _(h

6、ave) some water.二、判断下列情境与所给句子是(T)否F)相符。( )1.当你想知道对方是否想要一颗糖果时,你会说: Can I have a sweet?( )2.妈妈给你一个苹果，但你不想吃,你会说: No, thank you.三、根据上下文和首字母提示，填写正确的单词补全对话。A: Hello, Yang Ling.B: Shh! Dont s_ in the library, Wang Bing.A: Im s_. W_ y_like a hot dog?B: No, t_. Dont e_here.A: OK. W_ a_some water?B: Yes. But

7、dont t_ again.三、want的用法want 作动词,意为“想要”,用法如下：1. want sth., 意为“想要某物”。sth.是 something 的缩写形式,一般指名词: apple、pencil、rubber、book 等。如: I want a new jacket. 我想要一件新夹克衫。 Do you want an egg? 你想要个鸡蛋吗?2. want to do sth.意为“想要做某事”。do 指的是动词原形，表达主语想要做的动作。如：She wants to sleep. 她想睡觉。3. want sb. to do sth.意为 “想要某人做某事”。sb

8、.是 somebody 的缩写形式,是 want 的宾语。如: I want him to eat this cake. 我想要他吃这个蛋糕。Lisa wants me to come. 丽莎想要我来。 语法提优练3一、单项选择。( )1. My brother wants _a sweet.A. eat B. to eatC. eating( )2. Would you _some milk?A. have B. want C. like( )3. Do you _so me milk?A. want B. want toC. to want( )4. My mum wants me _th

9、e window.A. close B. to closeC. close to二、从方框中选择合适的句子补全对话。A: 1. _A. Yes. I like apple pies.B. Do you like hot dogs?C. Good morning, Alice.D. Would you like some?B: Good morning, Jack.A: 2. _B: No, I dont.A: What about apple pies?B: 3. _A: Look! I have some apple pies.4. _B: Yes, please. Yummy!参考答案(一) 否定祈使句一、1. C 2. B 3. B二、1. Dont talk 2. Listen to 3. Close(二) 用“Would you like?”征求对方意见一、1. Would 2. Does 3. to have二、1. F 2. T三、shout; sorry; Would you; thanks; eat; What about; talk(三) want 的用法一、1. B 2. C 3. A 4. B二、1. C 2. B 3. A 4. D