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---The president _____ by his doctor today that his cancer has come back.
A.informsB.has informed
C.has been informedD.is being informed
C

試題分析:考查時(shí)態(tài)。句意:總統(tǒng)今天被通知他的癌癥又復(fù)發(fā)了。句意說(shuō)明總統(tǒng)和通知之間構(gòu)成被動(dòng)關(guān)系,同時(shí)也表示已經(jīng)被通知了故使用現(xiàn)在完成時(shí)的被動(dòng)形式。故C正確。
點(diǎn)評(píng):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(yǔ)。要根據(jù)時(shí)間狀語(yǔ)來(lái)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。如since, so far等經(jīng)常與現(xiàn)在完成時(shí)連用。在條件狀語(yǔ)從句中用一般現(xiàn)在時(shí)代替將來(lái)時(shí)等等。
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