Negative Sentences

A negative sentence states that something is incorrect.

Negative form:  

             we use (not) after the auxiliary.                                                

               Subject +Auxiliary verb + Not+ Main Verb 




Object

cases when we put (not) :

*When we have the verb to be as the main verb (is, am, are, was, were) , we make negative forms by putting not after be.

• He is not ill. 
• You are not late. 
• I was not surprised. 
• i am not tired.                                                                                                                            

*When (have) is the main verb, we make negative forms by putting (do not) before have.

• we do not have money. 
• He does not have good marks.                                                                                                                

*When there are no auxiliary verbs, we make negative forms by putting(do not) before the verb. After (do not) we use the infinitive without to.

• She does not prepare dinner .
• They do not go away         

Negative sentences with the main tenses: 

Tense Negative Element  Examples the present simple am not/ is not/are not/doesnot  do not i am not sad she is not happy they do not play she does not work the past simple  was not/ were not/ did not i was not absent we were not here they did not finish the future will not  i will not visit her the  present  perfect has not have not  he has not gone you have not understood conditional would not  they would not play

remark :  

in the present continous and the past perfect (not) is placed after the auxiliary .

negative with modals: 

can not, could not, shall not, should not, may not, might not, must not.

Negative questions:

form:

if it is yes not question:

• auxiliary verb + n't + subject. + the main verb + object+ ?

examples:

• isn't she ill ?      
•  aren't you going to visit your grandmother ?
•  haven't they understood the lesson ?
•  hadn't he wrote the letter ?
•  don't we work well ?    
• doesn't he finish his homework ?
•  didn't you find your mobile ?
•  wouldn't they come to my party ?  

if it is (wh) quetion:

• wh + auxiliary verb +n't + subject + the main verb + object +?

examples:

• what don't you want to write?
• who wasn't here yesterday?
• why hasn't he understood?
• who will not come tomorrow?