Is this sentence(he must have been doing extremely well in his schoolwork,because he was offered scholarships from several fine universities) changeable whit this one(he must have done extremely well in his schoolwork,because he was offered scholarships from several fine universities)(i mean both of them mean one meaning)
what about this one(you should have been doing your homework last night instead of wathing television)with(i mean changeable)(you should have done your homework last night instead of watching television)
what does (in regard to) mean?
Yes, the two pairs of sentences carry essentially the same meanings, Mohammad.
'in regard to' = in respect to, concerning. 'In regard to my religion, I am a Buddhist; and in regard to my politics, I am a Democrat.'