Do you avoid using 'Being' in the front of a sentence as a participle phrase even though it's grammatically correct?-- It is not grammatical 'correct' in that it is not in use. No native speaker would say, write or think that.
Will you say 'While watching TV, I fell asleep?' or eles instead'-- Yes.
Finished his homework, Roger started playing computer games.W
I thought (or someone/books taught me) that the way to change a sentence into a paticiple sentence is omit the subject and transform the verb in the main clause. Q1) Is it correct?
The example I brought is a good example of it.
You said:
Finished his homework, Roger started playing computer games.Will you
I cannot vouch for or deny many of these 'assembly rules' that appear in ESL texts, since my English does not function that way. I don't think it is that simple, however (because it never is).
'-Ed' participles in nonfinite clauses reflect a passive voice form, not an active voice form, so that I can say these: