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has lost, don39。t find B. is missing, don39。t find C. has lost, haven39。t found D. is missing, haven39。t found. 答案D. 前句是一個仍在持續(xù)的狀態(tài),應(yīng)用進行時,由于沒有找到,其影響仍然存在,應(yīng)用完成時,瞬間動詞用于否定式時可用于完成時。二、不用進行時的動詞 1)表示事實狀態(tài)的動詞,如have, belong, possess, cost, owe, exist, include, contain, matter, weigh, measure, continue等。例如:I have two brothers. 我有兩兄弟。 This house belongs to my sister. 這房子是我姐的。 2)表示心理狀態(tài)的動詞,如know, realize, think see, believe, suppose, imagine, agree, recognize, remember, want, need, forget, prefer, mean, understand, love, hate等。例如:I need your help. 我需要你的幫助。 He loves her very much. 他愛她很深。 3)瞬間動詞,如accept, receive, plete, finish, give, allow, decide, refuse等。例如: I accept your advice. 我接受你的勸告。 4)系動詞,如seem, remain, lie, see, hear, smell, feel, taste, get, bee, turn等。例如: You seem a little tired. 你看上去有點累。小學(xué)英語語法:現(xiàn)在進行時現(xiàn)在進行時 ——表示現(xiàn)在正在進行的動作 構(gòu)成:主語+be動詞+動詞的現(xiàn)在分詞+其它成分 We are having lunch. He is reading a book. The dog is running after a cat. The boys are swimming across the river. ★變疑問句將be動詞移到句首 Are we having lunch? Is he reading a book? Is the dog running after a cat? Are the boys swimming across the river? ★變否定句在be動詞后面加 not We are not having lunch. He is not reading a book. The dog is not running after a cat. The boys are not swimming across the river. ★特殊疑問句:what, which, how, where, who, etc. 疑問詞+動詞+主語+現(xiàn)在分詞 What are you doing? What is she doing? What is the dog doing? 沒有進行時的動詞(必背) 表示狀態(tài),思想,感情和感覺的動詞不能表示正在進行的動作: 1. 表示感覺,感官的詞 see, hear, like, love, want 2. have, has當(dāng)“擁有”講時沒有進