对于大学英语四六级考试来说，语法非常重要。坚实的语法是英语水平进阶的充分必要条件。但现实情况是，不少人对语法学习并没有一个清晰的概念，甚至忽视语法学习。在此小编希望考生们重视起最语法的复习。今天文都四六级网给大家盘点2020年上半年大学英语六级语法：动词不定式的否定，希望对您有所帮助。

大学英语六级语法：动词不定式的否定

Tell him not to shut the window…

She pretended not to see me when I passed by. 我走过的时候，她假装没看见。

典型例题

1)Tell him ___ the window.

A. to shut not　 B. not to shut　 C. to not shut

D. not shut

答案：B。 tell sb to do sth 的否定形式为tell sb not to do sth.

2)She pretended ___ me when I passed by.

A.　not to see　 B. not seeing　　C. to not see

D.　having not seen

答案：A。 pretend 后应接不定式。其否定形式为pretend not to do sth.。

3)Mrs. Smith warned her daughter ___ after drinking.

A. never to drive　 B. to never driver

C. never driving　 D. never drive

答案：A。warn sb to do sth. 的否定形式为warn sb not to do sth. 此处用的是否定词never.

4) The boy wanted to ride his bicycle in the street，but his mother told him ____.

A. not to　　B. not to do　　C. not do it

D. do not to

答案：A。not to 为not to do it 的省略形式。可以只用to这个词，而不必重复整个不定式词组。及物动词do后应有名词、代词等，否则不对，因此B，D不对。

5) The patient was warned ___ oily food after the operation.

A. to eat no　 B. eating not　 C. not to eat

D. not eating

答案：C。warn一词要求后用不定式，此处为不定式的被动，否定形式为be warned not to do。

语法的学习过程会觉得条目繁多，很难记，而且枯燥无味，这种情况下，学习应该寻找的是语法的学习方法。掌握方法，在学习过程中才能克服困难。更多四级语法、六级语法请及时关注文都四六级网站。