類型:英語(yǔ)語(yǔ)法
時(shí)間:2020-08-28
點(diǎn)擊量845
下面這道題是選A還是B?as引導(dǎo)時(shí)間狀語(yǔ)從句時(shí)謂語(yǔ)動(dòng)詞可用be嗎?
“I’m
going to the post
office.” “_________ you’re
there, can you get me some
stamps?”
A. As B.
While C.
Because D. If
【答案分析】
此題從句意看,A和B均可以填,因?yàn)樗鼈兙捎脕硪龑?dǎo)時(shí)間狀語(yǔ)從句,表示“當(dāng)…….的時(shí)候”,于是一些同學(xué)便隨便從A、B中選擇一項(xiàng)。
結(jié)果是:選A者錯(cuò)誤,選B者正確。
為什么呢?因?yàn)?as 和
while 在引導(dǎo)時(shí)間狀語(yǔ)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(yǔ)通常應(yīng)是那些表示動(dòng)作或發(fā)展意義的動(dòng)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(dòng)詞;而 while 則無此限制。所以此題的最佳答案是B而不是A。請(qǐng)?jiān)倏蠢洌鸢妇x 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(duì)它引導(dǎo)時(shí)間狀語(yǔ)從句時(shí)而言的,它若引導(dǎo)原因狀語(yǔ)從句,則無此限制。如:
I went to bed
early, as I was
exhausted. 睡得早,因?yàn)槲医钇AΡM了。
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(duì)他太苛刻。
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