unit 5 Grammar1 知识点整理及练习2021-2022学年牛津译林版八年级上册

8AU5 Grammar1 情态动词表猜测。 1.肯定猜测“一定是”：must She must be sick, Tatiana thought. 她一定是病了，塔蒂亚娜心想。 2.肯定猜测“可能是”：may I may be back next year. 我可能明年回来。 [拓展]might是may的过去式，表示推测时，可能性比may更小。 I might get a paper in the town. 我或许能在城里买到一份报纸。 3.否定猜测“不可能”：can’t That can't be him. He is in New York now. 那不可能是他。他现在在纽约呢。 4.否定猜测“可能不”：may not（很少考） It may not be a great suggestion. 这可能不是个好的建议。 [经典例题] (1)—Who is making much noise? —It ____ be Timmy. He is sleeping now. A. can’t B. may not C. mustn’t D. couldn’t (2)—Cathy, I just helped you clean up your room. —Thanks. But you ________ do it. I could manage(设法完成) it myself. A. can’t B.mustn’t C. needn’t D.shouldn’t (3)—Do you have any plans for this Sunday? —I’m not sure. I _______ go to the countryside to see my grandmother. A. can B. must C. may D. need (4)—Is the woman over there Lily’s mother? —Oh, that _____ be her mother. She looks so young! A.should B. must C. can’t D. may (5)—Wow, anot