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Subject-verb agreement

Subject-verb agreement with other verbs

  • When you use a verb in the present simple and the subject is the third person singular (he, she or it), add an –s to the verb: 

Professor Jones lives nearby. 

  • Remember that there can only be one –s ending: either on the subject or on the verb: 

That car costs too much. 

Those cars cost too much. 

  • Remember also that you must not add an –s to modal verbs (can, could, will, would, shall, should, must): 

It can be rather difficult.

To do

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