Question

 AIDS is said        the biggest health challenge to both men and women in that area over the past few years.

A. that it is         B. to be         C. that is has been      D. to have been

 

Answer 1

【答案】

 D

【解析】：本題的基本句型是：It is said that…本句型可以轉換為：sth/sb is said to…當有in/over the past +時間段做狀語時句子要用完成時態，所以要選D。

【考點】：①考查It is said that 句型到sb/sth is said to的轉換②使用現在完成時態的情況。

【易錯點】：本題由于忽視了over the past few years這個短語容易選了B答案。

【備考建議】：表示現在完成時態的狀語或句型有很多如要總結歸納如：①lately/recently②so far③since+時間點④by+時間點（現在）⑤It is +序數詞+time that …⑥in/over the last/past + 時間段等等。