Question

英语中肯定句怎么变否定句？

Answer 1

你好，要想学好英语，你要不断积累，这样你就可以将英语学好。我帮你总结几点，供你参考，谢谢。
一、当肯定句的谓语动词是be或由be构成时，改为否定句，应在be后面加not。二、当肯定句的谓语动词只是行为动词时，改为否定句，要用“助动词do（does，did）＋not＋动词原形”。三、当肯定句的谓语是由“情态动词can，may，must等＋动词原形”构成或由“助动词will，have，had等＋动词原形（或动词的现在分词、过去分词）”构成，变否定句，要用“情态动词／助动词＋not＋动词原形（或动词的现在分词、过去分词）”构成。四、当肯定句的谓语是have时，分两种情况：1.当have作“有”讲时，变否定句的方法有：a．由have
＋not
＋其它；b．由have
＋no
＋其它；c．由
don't（doesn't，didn't）＋have＋其它。2当have既不当作“有”讲，也不是助动词，而是行为动词时，改为否定句，要用“助动词do，
does，did等＋not
＋have”构成。五、当肯定句中含有情态动词have（has）to时，改为否定句，有两种构成法，一种借助do，一种不借助do（仅限于现在时和过去一般时），多数人用第一种形式。六、当肯定句中含有too，also时，改为否定句，须将too，
also改为either。七、当肯定句中含有always时，改为否定句，须将always改为never。八、当肯定句中含有already时，改为否定句，须将already改为
yet。九、当肯定句中含有nearly时，改为否定句，须将nearly改为
hardly。
如果能对你有所帮助，我就高兴。

Answer 2

1.在一般现在时和一般过去时中,1)在be后加not.
He is here.否定：He isn't here They were very happy.否定：They weren't very happy
如动词是其它的实意动词：
2)如是动词原形则在前加助动词do 再加not；
They do sports every day.(do在这里是“做”的意思,是实意动词,不能直接加not否定)
否定：They don't do sports every day.
3）动词是第三人称单数则在前加助动词does 再加not； ,且单三还原成原形
He gets up at six.否定：He doesn't get up at six
4)动词是过去式,则在前加助动词did再加not；
We visited the old man yesterday.否定：We didn't visit the old man yesterday.
2.如果谓语动词是情态动词,则在情态动词后加not.情态动词也是一种助动词
We can dance very well.否定：We can't dance very well
3.如果谓语动词是其它时态,则在第一个助动词后加not
They are working hard.(be dong 中的be帮助构成了时态,是助动词)
否定：They are not working hard.
He has finished his homework.(have done 中的have帮助构成了时态,也是助动词)
否定：He has not finished his homework.
4.使用no,hardly,seldom,never,nobody,few,little 等否定词
Nobody is in the room.=There is not anybody in the room.

Answer 3

在一般现在时和一般过去时中,1)在be后加not.
He is here.否定：He isn't here They were very happy.否定：They weren't very happy
如动词是其它的实意动词：
2)如是动词原形则在前加助动词do 再加not；
They do sports every day.(do在这里是“做”的意思,是实意动词,不能直接加not否定)
否定：They don't do sports every day.
3）动词是第三人称单数则在前加助动词does 再加not； ,且单三还原成原形
He gets up at six.否定：He doesn't get up at six
4)动词是过去式,则在前加助动词did再加not；
We visited the old man yesterday.否定：We didn't visit the old man yesterday.
2.如果谓语动词是情态动词,则在情态动词后加not.情态动词也是一种助动词
We can dance very well.否定：We can't dance very well
3.如果谓语动词是其它时态,则在第一个助动词后加not
They are working hard.(be dong 中的be帮助构成了时态,是助动词)
否定：They are not working hard.
He has finished his homework.(have done 中的have帮助构成了时态,也是助动词)
否定：He has not finished his homework.
4.使用no,hardly,seldom,never,nobody,few,little 等否定词
Nobody is in the room.=There is not anybody in the room.

Answer 4

你好，要想学好英语，你要不断积累，这样你就可以将英语学好。我帮你总结几点，供你参考，谢谢。
一、当肯定句的谓语动词是be或由be构成时，改为否定句，应在be后面加not。二、当肯定句的谓语动词只是行为动词时，改为否定句，要用“助动词do（does，did）＋not＋动词原形”。三、当肯定句的谓语是由“情态动词can，may，must等＋动词原形”构成或由“助动词will，have，had等＋动词原形（或动词的现在分词、过去分词）”构成，变否定句，要用“情态动词／助动词＋not＋动词原形（或动词的现在分词、过去分词）”构成。四、当肯定句的谓语是have时，分两种情况：1.当have作“有”讲时，变否定句的方法有：a

Answer 5

通常来说，直接加not就可以，比如含有have
的句子后面直接加not就可以