祈使句結(jié)構(gòu)
祈使句用以表達命令,要求,請求,勸告等。
1) 祈使句有兩種類型,一種是以動詞原形開頭,在動詞原形之前加do (但只限于省略第二人稱主語的句子)。
Take this seat.
Do be careful.
否定結(jié)構(gòu):
Don't move.
Don't be late.
2) 第二種祈使句以let開頭。
Let 的反意疑問句
a. Let's 包括說話者
Let's have another try,shall we / shan't we
= Shall we have another try
b. Let us 不包括說話者
Let us have another try,will you / won't you
= Will you please let us have another try
否定結(jié)構(gòu):
Let's not talk of that matter.
Let us not talk of that matter.
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