We’ll climb the mountain _______ the weather is bad this weekend.

A.if B.when C.until D.unless

D

解析試題分析:句意:我們將會(huì)爬山,除非這個(gè)周末天氣不好。IF是如果的意思,如果結(jié)果是肯定的那么IF后面引導(dǎo)的從句(從句在主句前面用逗號(hào)隔開(kāi))用一般現(xiàn)在時(shí),而主句也用一般現(xiàn)在時(shí)。如果結(jié)果是可能的主句(從句用一般現(xiàn)在時(shí))就用一般將來(lái)時(shí)。UNLESS相當(dāng)于IF NOT就是如果不/除非的意思用法和剛才IF用的一樣。總結(jié):結(jié)果是肯定的就主現(xiàn)(在時(shí))從現(xiàn)(在時(shí))結(jié)果是可能的就是主將從現(xiàn)啦。無(wú)論結(jié)果是肯定的或可能的從句都是一般現(xiàn)在時(shí)而變化的是主句!故選D
考點(diǎn):考查連詞的用法。

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