Unit7 Grammar--Task 知识点 2022-2023学年牛津译林版七年级下册

7b Unit7 Grammar--Task 知识点 Unit 7 情态动词can／could／may 我们可以用情态动词can／could来表示能力。 情态动词can表示现在的能力，could表示过去的某种能力。如： He can speak good English.他英语讲得很好。 Sandy cannot dance.桑迪不会跳舞。 The old man could swim across the river when he was young. 这位老人年轻时能够游过这条河。 注意：我们也可以用be able to来表示能力，be动词的形式根据句子所用时态变化。 我们也可以用情态动词can／could／may来表示许可。 情态动词could表示一种委婉的语气，比用can表达更有礼貌。may较正式。如： Can l use your pen？我可以用一下你的钢笔吗？ Could we picnic here？我们可以在这儿野餐吗？ May I see the letter？我可以看看这封信吗？ What／How感叹句 我们常用感叹句来表达高兴、愤怒、伤心等情感。感叹句通常由What或How来引导。 What（＋不定冠词）＋形容词＋名词＋缩略的陈述句（陈述句的主语是代词）。如： What a nice boy he is！他是一个多好的男孩啊！ What nice boys they are！他们是多么好的男孩啊！ What an exciting film it is！这是一部多么令人兴奋的电影啊！ What exciting films they are！它们是多么令人兴奋的电影啊！ What nice weather it is！天气多好啊！ 注意：1．当名词为复数或是不可数名词时，不能加不定冠词。 2．在口语中常常省略后面缩略的陈述句，即What a nice boy he is！可以直接表达为What a nice boy! How＋形容词＋缩略的陈述句（此陈述句中的主语可以是名词或代词）。如： How funny he looks！他看上去真滑稽！ How exciting the film is！这部影片真激动人心！ 注意：在口语中常常省略后面缩略的陈述句，即How exciting the film is！可以直接表达为How exciting! 练习： 情态动词(can;could;may)/What 和How感叹句 一 用can/can't/could/couldn't/may填空 1.-_________I ask you some questions,Mr Black? --Of course. 2.The man______drive a car last year. But now he______drive it. 3.My uncle______speak English. He doesn't know anything about it. 4. I chatted online with my friend in England.We______hear each other. 5.---______you make a model ship when you were in Grade 2? -No,I______. 二 用how 或 what补全下列感叹句 1._______a lovely song! 2._______hard work it is! 3.________interesting the film is! 4._______fast she runs! 5._______brave the boys are! 6._______a good film it is! 7._______nice weather! 8._______amazing the news is! 三 单项选择 1.-Excuse me.________I sit here? -You'd better not. It's the man's seat. A. Must B.Need C. Could D.Should 2.-Do I have to hand in my report now? -Of course,you______.We're going to discuss it. A. can B.can't C.must D. mustn't 3.-Maria,we will graduate in a week. --_______!We should keep in touch. A. How time fly B. What time fly C.How time