初中英语语法大全:祈使句结构
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初中英语语法大全:祈使句结构
13.1 祈使句结构
祈使句用以表达命令,要求,请求,劝告等。
1) 祈使句有两种类型,一种是以动词原形开头,在动词原形之前加do (但只限于省略第二人称主语的句子)。
take this seat.
do be careful.
否定结构:
don't move.
don't be late.
2) 第二种祈使句以let开头。
let 的反意疑问句
a. let's 包括说话者
let's have another try,shall we / shan't we
= shall we have another try
b. let us 不包括说话者
let us have another try,will you / won't you
= will you please let us have another try
否定结构:
let's not talk of that matter.
let us not talk of that matter.
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