题目内容
18.-How often do I need to feed the dog?-It ________ food every day,or it will be hungry.( )
| A. | must give | B. | must be give | C. | must gave | D. | must be given |
分析 翻译:-我需要多长时间喂一次狗?-必须每天都给食物,否则它将会饿的.
解答 句子主语是it,代指狗,it和give之间应是被动关系,选项中含有must,所以是含有情态动词的被动语态,结构是情态动词+be+动词的过去分词.故答案为D
点评 本题关键在于判断是被动还是主动语态,同时还要注意含有情态动词的被动语态结构.
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