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as表示“當(dāng)……時(shí)候”時(shí)對謂語動詞的限制 | |||
作者:TJX 文章來源:本站原創(chuàng) 點(diǎn)擊數(shù): 更新時(shí)間:2013/9/4 |
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as表示“當(dāng)……時(shí)候”時(shí)對謂語動詞的限制 有這樣一道題,該選as還是when? “I’m going to the post office.” “_________ you’re there, can you get me some stamps?” A. As B. While C. Because D. If 【分析】此題從句意看,as 和 while 均可以填,因?yàn)樗鼈兙捎脕硪龑?dǎo)時(shí)間狀語從句,表示“當(dāng)……的時(shí)候”,于是一些同學(xué)便隨便從as、while中選擇一項(xiàng)。結(jié)果是:選as者錯(cuò)誤,選while者正確。為什么呢?因?yàn)?/FONT> as 和 while 在引導(dǎo)時(shí)間狀語從句表示“當(dāng)……的時(shí)候”時(shí),有這樣一個(gè)區(qū)別:as 所引導(dǎo)的從句謂語通常應(yīng)是那些表示動作或發(fā)展意義的動詞,不能是be (是,在), have (有),like (喜歡),belong (屬于)等表示狀態(tài)或靜態(tài)意義的動詞;而 while 則無此限制。所以此題的最佳答案是B而不是A。請?jiān)倏匆韵驴碱},答案也選 while,不選as: (1) _________ you are at home alone, please don’t leave the door open. A. While B. As C. Before D. How (2) _________ you are alone with her, tell her that you like her. A. While B. As C. After D. How 不過順便說一句,以上關(guān)于 as 的用法限制是針對它引導(dǎo)時(shí)間狀語從句時(shí)而言的,它若引導(dǎo)原因狀語從句,則無此限制。如: As he is young, we can’t be too hard on him. 由于他還年輕,所以我們不能對他太苛刻。 As the wages were low, there were few applicants for the job. 因?yàn)楣べY低,沒有什么人申請這份工作。 The teacher told him to leave as he was a disturbance to the other students. 因?yàn)樗蓴_了其他學(xué)生,所以老師叫他出去。 |
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