一般將來時:表示將來將要發(fā)生的動作, 經(jīng)常和tomorrow, next year, the day after tomorrow, the year after the next, in five hours time, etc. 表示將來的詞聯(lián)用 結(jié)構(gòu): 主語+助動詞will+動詞原形 I will go t
過去進行時:表示過去正在進行的動作,經(jīng)常用在when, while, as引導(dǎo)的狀語從句中。 結(jié)構(gòu) 1.過去進行時由 主語+was/were + 現(xiàn)在分詞 構(gòu)成 例如:We were having supper when the phone rang. 我們正在吃晚飯時電話響
過去完成時:用法:在過去的時間里,兩個動作中,發(fā)生在前的哪個動作要用過去完成時。 結(jié)構(gòu):had+過去分詞 After she had finished her homework, she went shopping. They had sold the car before I asked the pr
現(xiàn)在完成時:構(gòu)成:主語+助動詞have, has+過去分詞 用法: 1)表示過去發(fā)生的和現(xiàn)在有某種聯(lián)系的動作,常和just, usually, already, since等時間副詞連用 I have just had lunch. (飽了,不用再吃了) He has had a c
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 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
一般現(xiàn)在時:表示一般性,經(jīng)常性的動作或一般性事實 含有be動詞的句子 He is a teacher. The girl is very beautiful. Tim and Jack are students. 變疑問句將be動詞移到句首 Is he a teacher? Is the girl very be