3. 当think, believe, suppose等动词后面跟宾语从句时，通常用否定主句的谓语动词来达到否定从句谓语动词的目的。如：

I think they can come tonight.

→I don’t think they can come tonight.

2. 用含否定意义的词(如never, nothing, nobody, none, neither, little, few等)。

(1)always / ever →never, and →or。如：

He was always late for school last term.

→He was never late for school last term.

(2)too→not…either, already→not…yet。如：

He goes to school by bike, too.

→He doesn’t go to school by bike, either.

(3)all→none, both→neither, both…and →neither…nor，此时，谓语动词仍用肯定形式，但当neither作主语，谓语动词用单数形式；“neither …nor…”连接两个主语时，谓语动词应和靠近它的主语保持一致。如：

He knows all of the workers here.

→He knows none of the workers here.

Both of the twins are from England.

→Neither of the twins is from England.

1. 改变谓语结构

在系动词be, become, feel, smell等，助动词be, have, do 等以及情态动词can, may, should等后加not。如果句子的谓语中不是以上这些词，而是行为动词，则相应地将动词的原形，第三人称单数或过去式变为否定形式。如：

He has seen the film before.

→He hasn’t seen the film before.

He will write the book in two months.

→He won’t write the book in two months.

He does his homework in the evening.

→He doesn’t do his homework in the evening.

100. Lucy can't speak Japanese. And Lily can't speak it, either.

　_______ Lucy ______ Lily can speak Japanese.

99. The children are too tired to walk farther.

　The children are ______ tired ______ they _____ walk farther.

98. I always get up early in my school days.

　I _________ get up ________ in my school days.

97. It took Mary two weeks to prepare for the exam.

　Mary _________ two weeks _________ _________ for the exam.

96. We enjoyed ourselves in the People's Park last Sunday.

　We _____ ______ _____ _____ in the People's Park last Sunday.

95. My sister prefers reading to going shopping.

　My sister likes _________ _________ than going shopping.

94. Jane got to school earlier than any other student.

　Jane got to school _________ _________ all the students.