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18.-_________ run in the hallways.
-Sorry,I won't.(  )
A.PleaseB.Please notC.NotD.Don't

分析 --不要在走廊里跑.
--抱歉,我不会了.

解答 答案:D.
结合Sorry,I won't 可知上文是否定祈使句,故用don't+动词原形,故选D.

点评 一般说来,祈使句的否定是在祈使句首加Don't.如:
(1)Come here.-Don't come here.不要来这儿.
(2)Be angry.-Don't be angry.不要生气
当祈使句表示邀请或建议(Let's…) 时,则在Let's与 do之间加not.如:
(1)Let's talk about it.-Let's not talk about it.我们别谈论它吧.
(2)Let's go swimming there.-Let's not go swimming there.我们别去那里游泳吧.

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