题目内容
8.-Why does the lake smell terrible?-Because large quantities of water .( )
A. | is being polluted | B. | have been polluted | ||
C. | is polluted | D. | has been polluted |
分析 --为什么湖水这么难闻?
--因为大量的水已经被污染了.
解答 答案:B.根据the lake smell terrible(湖水这么难闻)可以知道水已经被污染了,所以用现在完成时态的被动语态,选择B.如果主语用 a large quantity of water,那么选择D.
点评 考查现在完成时态的被动语态.被动语态的结构主要有以下几种:一般是be done;进行式 be being done;完成式 have been done;将来式will be done.
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