表示责备 needn't have done 本不需要做……但却做了 You needn't have wakened me up; I don't have to go to work today. He must be reading, ____ he? You must do it yourself, ____ you? He must have gone over the article,
______he? It must have rained last night, _____ it? 表猜测语气的反意疑问句的构成 isn’t don’t hasn’t didn’t 可兼做行为动词的情态动词:need 、 dare
情态动词 (+动词原形) 行为动词
. need dare 2.尤其用于: *否定句及疑问句中;
3.常以needn’t 和daren’t
的形式出现; 4.dare有其过去时dared.
多用于肯定句;
(sb.) need to do
dare to do (sth.) need to be
done
(sth.) need doing
判断正误:
How dare you say such a thing?
How dare you to say such a thing? He daren’t to speak English before such a
crowd, did he?
He daren’t speak English before such a
crowd, dare he? Nobody need to be afraid of catching the disease.
Nobody need be afraid of catching the disease.
need 的被动含义:need,want, require, worth (adj.)后面接doing 也可表示被动,
need doing =need to be done
四、虚拟语气
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