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ESL forum > Ask for help > Doubts    

Doubts



RENZO
Peru

Doubts
 
Hello , dear colleagues
I am teaching  thiese grammar tenses and I do not know how to focus them.
 
what is the difference between might have done and could have done.
what is the difference between defining and non defening relative clauses.
 
defining and non defining are the same to relative clauses. who, which, whose, when, where.
Thanks a million in advance.
take care.

22 Nov 2010