“I’m going to the post office.” “_______ you’re there, can you get me some stamps?”
A．AsB．While
C．BecauseD．If
B。
盡管 as 和 while 均可用作從屬連詞引導(dǎo)時(shí)間狀語(yǔ)從句，表示“當(dāng)……的時(shí)候”，但兩者有一個(gè)重要區(qū)別，就是這樣用的 as 從句的謂語(yǔ)不能是狀態(tài)動(dòng)詞。當(dāng)然，如果 as 不是表示“當(dāng)……的時(shí)候”，其謂語(yǔ)是完全可以用狀態(tài)動(dòng)詞的。
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