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2013小學(xué)四年級(jí)英語語法知識(shí)點(diǎn)輔導(dǎo):祈使句結(jié)構(gòu)

時(shí)間:2013-08-28 11:03:00   來源:無憂考網(wǎng)     [字體: ]
這篇關(guān)于2013小學(xué)四年級(jí)英語語法知識(shí)點(diǎn)輔導(dǎo):祈使句結(jié)構(gòu),是®無憂考網(wǎng)特地為大家整理的,希望對(duì)大家有所幫助!
祈使句用以表達(dá)命令,要求,請(qǐng)求,勸告等。

1) 祈使句有兩種類型,一種是以動(dòng)詞原形開頭,在動(dòng)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.