much research/a lot of research/much of the research was carried out.

[kadioguy]

much
adjective

Much research [=a lot of research] was carried out.

http://learnersdictionary.com/definition/much
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a. Much research was carried out.
b. A lot of research was carried out.
c. Much of the research was carried out.

Do the three sentences mean the same thing?

 

[Rover_KE]

The first two mean the same, but the third doesn't.

 

[kadioguy]

The first two mean the same, but the third doesn't.

What is the difference in meaning between them? Could you please tell me more about that?

 

[GoesStation]

A and B tell us a lot of unspecified research was done. C says that much of the research described earlier in the text was completed.

 

[kadioguy]

A and B tell us a lot of unspecified research was done. C says that much of the research described earlier in the text was completed.

Thank you, GoesStation.

Can I say:

C says that much of the research mentioned earlier was completed.

 

[GoesStation]

Can I say:
C says that much of the research mentioned earlier was completed.

Yes.