--- Tommy is planning to buy a car.
--- I know. By the time he returns from abroad, he ________ enough for a used one.
A.will have saved B.saves C.had savedD.will save
A

試題分析:考查時(shí)態(tài):句意:--Tommy正計(jì)劃買個(gè)汽車。--我知道。到他國外回來的時(shí)候他將攢足夠買一輛二手車的錢。By the time引導(dǎo)的是時(shí)間狀語從句,用一般現(xiàn)在時(shí)代替一般將來時(shí),所以主句應(yīng)該是將來范疇的時(shí)態(tài),而且時(shí)間狀語是by the time連接的,主句用將來完成時(shí)。選A。
點(diǎn)評:時(shí)態(tài)題的考查關(guān)鍵是抓住句子的上下文含義和句中的時(shí)間狀語。要根據(jù)時(shí)間狀語來選擇合適的時(shí)態(tài),在平時(shí)的學(xué)習(xí)中要注意積累有關(guān)時(shí)態(tài)的用法和各種時(shí)態(tài)的特殊之處。還要注意語態(tài)的正確使用。注意時(shí)間條件狀語從句不能用一般將來時(shí),應(yīng)該用一般現(xiàn)在時(shí)代替一般將來時(shí)。連詞by到…時(shí)為止;該詞經(jīng)常與完成時(shí)連用。
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