Question

【題目】My uncle has taught in this school________ he was twenty years old.

A.afterB.forC.untilD.since

Answer 1

【答案】D

【解析】

句意：我的叔叔在他20歲的時(shí)候就在這個(gè)學(xué)校教書了。

考查現(xiàn)在完成時(shí)。after在……之后；for為了；until直到；since自從。根據(jù)題干中的“has taught”可知是現(xiàn)在完成時(shí)，現(xiàn)在完成時(shí)的時(shí)間標(biāo)志詞：since+時(shí)間點(diǎn)；for+時(shí)間段；he was twenty years old他20歲的時(shí)候是時(shí)間點(diǎn)，要用since。故選D。