當(dāng)說(shuō)話人認(rèn)為句子所述的是不真實(shí)的或極少有可能發(fā)生或存在的情況時(shí)。從句虛擬語(yǔ)氣動(dòng)詞時(shí)態(tài)的形式如下:如果從句表示與現(xiàn)在事實(shí)相反,謂語(yǔ)動(dòng)詞用一般過(guò)去時(shí)。
as if 的用法
一、as if 從句的作用
1.在look, seem 等系動(dòng)詞后引導(dǎo)表語(yǔ)從句。如: She looks as if she were ten years younger. 她看起來(lái)好像年輕了十歲。 It seems as if our team is going to win. 看來(lái)我們隊(duì)要?jiǎng)倭恕?/p>
2.引導(dǎo)方式狀語(yǔ)從句。如: She loves the boy as if she were his mother. 她愛這男孩,就好像她是他的母親一樣。 The child talked to us as if he were a grown?up. 那孩子跟我們談起話來(lái),像個(gè)成年人似的。
二、as if 還可用于省略句中
如果as if 引導(dǎo)的從句是“主語(yǔ)+系動(dòng)詞”結(jié)構(gòu),可省略主語(yǔ)和系動(dòng)詞,這樣as if 后就只剩下名詞、不定式、形容詞(短語(yǔ))、介詞短語(yǔ)或分詞。如: He acts as if (he was) a fool. 他做事像個(gè)傻子。 Tom raised his hands as if (he was going) to say something. 湯姆舉起手好像要說(shuō)什么。 She left the room hurriedly as if (she was)angry. 她匆忙離開房間好像生氣的樣子。
三、as if 從句的語(yǔ)氣及時(shí)態(tài)
as if 從句用陳述語(yǔ)氣的情況。 當(dāng)說(shuō)話者認(rèn)為句子所述的是真實(shí)的或極有可能發(fā)生或存在的事實(shí)時(shí)。如: It sounds as if it is raining. 聽起來(lái)像是在下雨。 He talks as if he is drunk. 從他談話的樣子來(lái)看他是醉了。