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(zhuǎn)換為：sth/sb is said to…當(dāng)有in/over the past +時(shí)間段做狀語時(shí)句子要用完成時(shí)態(tài)，所以要選D。

【考點(diǎn)】：①考查It is said that 句型到sb/sth is said to的轉(zhuǎn)換②使用現(xiàn)在完成時(shí)態(tài)的情況。

【易錯(cuò)點(diǎn)】：本題由于忽視了over the past few years這個(gè)短語容易選了B答案。

【備考建議】：表示現(xiàn)在完成時(shí)態(tài)的狀語或句型有很多如要總結(jié)歸納如：①lately/recently②so far③since+時(shí)間點(diǎn)④by+時(shí)間點(diǎn)（現(xiàn)在）⑤It is +序數(shù)詞+time that …⑥in/over the last/past + 時(shí)間段等等。