Don’t disturb me. I_______ letters all morning and have written ten so far.


  1. A.
    have written
  2. B.
    am writing
  3. C.
    was writing
  4. D.
    have been writing
D
試題分析:句意:不要打擾我,我整個早晨一直在寫信,到目前為止已經(jīng)寫了十封信。因?yàn)橛衋ll morning強(qiáng)調(diào)動作一直在進(jìn)行,故用現(xiàn)在完成進(jìn)行時,故選D。
考點(diǎn):考查動詞時態(tài)的用法。
點(diǎn)評:本題難度適中。動詞時態(tài)的考查與一定的語境結(jié)合一起增加了試題的難度,有的考生時態(tài)的用法背的很熟,但在不同的語境下,就做不對了,提醒考生一定要會分析理解語境。這里考生誤選C。
即學(xué)即練:Experiments of this kind        in both the U.S. and Europe well before the Second World War.
A. have conducted    B. have been conducted
C. had conducted    D. had been conducted
解析:D。句意:就在二戰(zhàn)爆發(fā)前,美國和歐洲都進(jìn)行過這種實(shí)驗(yàn)!笔紫瓤紤]語態(tài),主語experiment與conduct構(gòu)成動賓關(guān)系,謂語使用被動形式。題干中出現(xiàn)the second war是過去的時間點(diǎn),before the second war是過去的過去,因此使用過去完成時。選D。
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