17.More than 100students in that school_________ abroad for further study so far.( 。
A.are sentB.were sentC.had been sentD.have been sent

分析 到目前為止,那個學校已經(jīng)有100多人被送往國外深造了.

解答 答案是. 考查被動語態(tài),.本題考查現(xiàn)在完成時和被動語態(tài),so far常與現(xiàn)在完成時連用,student是和send是動賓關(guān)系,即,學生是被派往國外的,應(yīng)該使用被動語態(tài),故選D.

點評 被動語態(tài)由"助動詞be+及物動詞的過去分詞"構(gòu)成.被動語態(tài)的時態(tài)變化只改變be的形式,過去分詞部分不變.疑問式和否定式的變化也如此.掌握各種時態(tài)的被動語態(tài)是解題的關(guān)鍵.

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