欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

表示與過去事實(shí)相反的情況時(shí), if從句的謂語用had done形式, 主句的謂語用should / would / could / might + have done的形式 a. If she had invited me yesterday, I should have gone to the party. b. I would have checked my paper again if I had had more time at yesterday’s exam. c. If you had taken the teacher’s advice, you would not have failed in the exam. 【查看更多】

 

題目列表(包括答案和解析)

as if和as though引導(dǎo)的從句所敘述的情況與事實(shí)相反時(shí)，從句的謂語動(dòng)詞多用虛擬語氣。在虛擬語氣結(jié)構(gòu)中，用________時(shí)態(tài)來表示現(xiàn)在的情形；用________時(shí)來表示過去的動(dòng)作或狀態(tài)；用________時(shí)表示正在進(jìn)行的動(dòng)作；用________時(shí)表示將要發(fā)生的動(dòng)作。

當(dāng)as if和as though從句的主語和主句主語一致，且從句中含有系動(dòng)詞be的某種形式時(shí)該主語和系動(dòng)詞可以省略。

例如：John paused as if(he was)expecting Mary to speak．

查看答案和解析>>


同步練習(xí)冊答案