There are some people (who are) rowing on the river.

[diamondcutter]

There are some people rowing on the river.

If I change the sentence above as follows, do I also chage its meaning?

There are some people who are rowing on the river.

 

[emsr2d2]

There are some people rowing on the river.

If I change the sentence above as follows, do I also change its meaning?

There are some people who are rowing on the river.

No, they mean the same.

 

[diamondcutter]

Thanks, Rover.

Does the first sentence emphasize the whole thing of the people rowing on the river and the second one emphasize the people?

 

[Rover_KE]

Thanks, Rover. I haven't written anything yet. You can click 'Thank' on emsr2d2's post.

Does the first sentence emphasize the whole thing of the people rowing on the river and the second one emphasize the people?

No. The only difference is that you've added two unnecessary words.

 

[Tdol]

Where words can be omitted without changing the meaning, we often do so without any change in emphasis.