题目内容
1.People should ________ trees.( )A. | be kept to cut | B. | be kept from cutting | ||
C. | keep to cut | D. | keep from cutting |
分析 应该阻止人们砍树.
解答 答案:B
首先根据语境结合选项可知此句表达的意义为"必须阻止人们砍树";主语people 是动作keep(阻止)的承受者,确定用被动语态,设空处前面有情态动词should,说明本题考查含有情态动词的被动语态,其构成是:主语+情态动词+be+动词的过去分词.keep的过去分词是kept,另外注意短语:阻止某人做某事keep sb.from doing sth.故答案为:B
点评 本题考查时态和语态.每个时态都有标志词,熟记这些标志词是做题的关键.在没有时间状语的情况下可以根据语境来对时态做出判断
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