We hadn’t been out for long _________ she felt sick.
A.a(chǎn)sB.whileC.a(chǎn)fterD.before
D

試題分析:as表示原因;while當(dāng)……時(shí)候;時(shí)間段+ before,過(guò)了多久就……;句意:我們還沒(méi)出去多久她就生病了。before主要引導(dǎo)時(shí)間狀語(yǔ)從句,意為“先于”“…之后才”“(不多久)就…”。當(dāng)主句是將來(lái)時(shí)時(shí),從句謂語(yǔ)動(dòng)詞須用現(xiàn)在時(shí);當(dāng)主句是一般過(guò)去時(shí)或過(guò)去完成時(shí)時(shí),從句常用過(guò)去時(shí)。before引導(dǎo)的時(shí)間狀語(yǔ)從句不能用于否定式。
點(diǎn)評(píng):本題難度適中。判斷從句中用哪個(gè)連詞,需用記住連詞的用法,在句中的作用,連詞也是高考的熱點(diǎn),需要考生平時(shí)多練習(xí)。
即學(xué)即練:It may be a matter of months _____ it's ready.
A. as      B. while      C. after         D. before
解析:D。句意:要準(zhǔn)備好可能得數(shù)月時(shí)間。
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