一、考查 it 用作形式主語(yǔ)的用法
當(dāng)不定式、動(dòng)名詞、從句等用作主語(yǔ)時(shí),為避免頭重腳輕,通常在句首使用形式主語(yǔ)it,而把真正的主語(yǔ)放在句子末尾。如:
It’s no good sitting up too late. 熬夜沒(méi)有好處。
It is quite clear that he has read the book. 很顯然,他讀過(guò)這本書。
It doesn’t matter what he says. 他說(shuō)什么沒(méi)關(guān)系。
【特別提醒】注意it用作形式主語(yǔ)的三類特殊句式:
1.用作動(dòng)詞look, seem, appear, happen, occur, follow等的主語(yǔ)(后接that從句或as if從句)。如:
It seems that he knows everything. 他好像什么都知道。
It (so) happened that I had no money with me. 碰巧我沒(méi)帶錢。
2.當(dāng)系表結(jié)構(gòu)后接有if 或when引出的狀語(yǔ)從句時(shí),通常在系表結(jié)構(gòu)前使用形式主語(yǔ)表示說(shuō)話人對(duì)某情況的看法。如:
It was a great surprise to me when he did a thing like that. 他這樣做使我很吃驚。
It would be a tragedy if anything went wrong. 如果出了什么事就是一個(gè)悲劇。
3.用于if it were not for… / if it hadn’t been for…(若不是因?yàn)?。如:
If it hadn’t been for the freezing wind they could have reached the injured man in time. 要不是有刺骨的寒風(fēng),他們就及時(shí)趕到傷員身邊了。
本文來(lái)自:逍遙右腦記憶 http://m.yy-art.cn/gaozhong/187229.html
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