Why hasn’t he come?________ on time, we would have to put off the trip.
A.If he doesn’t comeB.If he will not comeC.If he didn’t comeD.If he wouldn’t come
C

試題分析:句意為:他為什么還沒(méi)來(lái)?如果他不來(lái)的話,我們就只好將旅行的時(shí)間往后延。
If引導(dǎo)的虛擬語(yǔ)氣,如果從句為現(xiàn)在時(shí),則使用虛擬語(yǔ)氣時(shí)用一般過(guò)去式;如果從句為過(guò)去式,則使用虛擬語(yǔ)氣時(shí)用過(guò)去完成時(shí);如果從句為將來(lái)時(shí),則使用虛擬語(yǔ)氣時(shí)用一般過(guò)去式或should+動(dòng)詞原形/were+ to do .根據(jù)主將從現(xiàn)的原理,if引導(dǎo)的真實(shí)條件句為現(xiàn)在時(shí),則從句用虛擬語(yǔ)氣時(shí)用一般過(guò)去式,故選C
考點(diǎn):考察if引導(dǎo)狀語(yǔ)從句的用法
點(diǎn)評(píng):if引導(dǎo)的虛擬條件從句一直是考察的重點(diǎn),考生在作答作答時(shí),一定要認(rèn)真區(qū)分if引導(dǎo)的是真實(shí)還是非真實(shí)條件狀語(yǔ)從句,從而正確判斷。
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