Book4Module6Grammar分析和总结分析和总结.pdf

GRAMMAR “情态动词 + have done”用法总结 【语境展示】 阅读下面句子，并试着归纳“情态动词 + have done”的用法。 1. Jack didn ’t come on time.He may / might have missed the bus. 2. Since nobody gave him any help, he must have done the research on his own. 3. — Sorry, Mum! I failed the job interview again. — Oh, it ’s too bad. You should have made better preparations. Instead you spent all your time playing computer games. 4. I shouldn ’t have watched that movie — it ’ ll give me horrible dreams. 5. I needn’t have worried before I came to the new school, for my classmates here are friendly to me. 6. He could have escaped, but he chose to stand and fight. 7. — Why are your eyes so red? You can’t / couldn ’t have slept well last night. — Yeah, I stayed up late writing a report. 【自我归纳】 构成 意义 例句 表示对已经发生过的情况的肯定推测，意为“可能发 ________ 1 生了某事” ，语气稍弱。 表示对过去已经发生过的情况的肯定推测，意为“一 must have done 2 定做过某事” ，语气较强。 should have done 表示“本应该做某事，而实际上并没有做”。 3 表示“本不应该做某事，而实际上却做了”，含有批 shouldn have done’t 4 评、责备或惋惜的意思。 needn ’t have done 表示“本不必做某事 , 而实际上却做了”。 5 could have done 表示“过去本来能够做某事而实际上没有做”。 6 can ’t / couldn have done’t 表示“过去不可能做了某事”。 7 【即学即练】 I. 选用括号内合适的内容完成下面对话。 A husband (H) and wife (W) are driving to a party and are lost. W: We