浙江省紹興縣楊汛橋鎮(zhèn)九年級英語全冊unit13we’retryingtosavetheearthsectiona1課件(編輯修改稿)
2025-03-31 06:37 本頁面
【文章內容簡介】 have been have heard has worked 4. The twins ___________ (wash) the clothes for an hour. 5. He _________ (play) basketball since three years ago. 6. How long ____ Sally _____ (sing) yet? have washed has played has sung 1. 情態(tài)動詞本身有一定的詞義 , 表示說話人的情緒、態(tài)度或語氣 , 但不能單獨作謂語 , 只能與其他動詞構成謂語。常見的有 : can (could), may (might), must, need, shall (should), will (would)等。 情態(tài)動詞 2. 情態(tài)動詞無人稱和數(shù)的變化 , 后接動詞原形。否定式是在情態(tài)動詞后面加 not。個別情態(tài)動詞有過去式形式 , 可用來表達更加客氣、委婉的語氣。 . Ken can climb up the tress like a koala. Tracy could ride a bicycle when she was five years old. You mustn’t play with fire. It is dangerous. Translation. 1. 我們不能在教室里吃東西。 2. 首先你必須完成作業(yè)。 3. 他現(xiàn)在不可能在家。 4. 她一定知道這個問題的答案。 We can’t eat in the classroom. You must finish your homework first. He can’t be at home now. She must know the answer to this question. 4a Fill in the blanks with the correct forms of the verbs in brackets. Joe: _____ you ever ______ (take) part in an environmental project ? Eric: Yes, I have. I ______ (help) with a CleanUp Day last year. It was __________ (consider) the biggest cleanup project this city ____ ever
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