Subject-verb agreement

    

    Subject-verb agreement is a grammatical rule that states that the verb must agree in number with its subject.  In English,  present tense verbs change to show agreement in the third person singular form (subjects represented by the pronouns HE, SHE, IT) by adding an S or ES. 

     

 The irregular verb BE has three forms in the present tense and two forms in the past tense:

 

Subject-verb agreement often causes problems when a noun rather than a pronoun is the subject of the verb. 

 

Example :

1.Nobody is here.

2.The students in addition to the teacher are all receiving special recognition for their excellent research. 

3.Some people in my office are very annoying

4.Few mountain climbers have successfully reached the peak of Mt. Everest.

5.I am on the bus.

6.Two hours is a long time to wait to see a doctor.

7.Either Bill or his family members have to approve it.

8.I was having my meal when you came in yesterday.     

9.Jim as well as his friends is a good swimmer.

10.They were talking about the latest movies. 
 
Thanks to :

1.http://www.myenglishteacher.net/subject_verb_agreement.html

2.https://eee.uci.edu/programs/esl/svlink.html

3.http://cutewriting.blogspot.com/2009/02/subject-verb-agreement-with-examples.html