well - ............. in
versed
The man sitting/sit next to her in the office is her colleague.
The man sitting...
present participle clause
verb + ing
bottom .............
line
more the meets.............
the eye
Launching/Having launched a new compaign last month, the Marketing dept. had meeting with Sales people
Having launched....
past participle clauses
3rd verb form
fare badly...
in
legal.....................
standing
Sales dropped dramatically, having decreased/decreasing profits for the company
decreasing
perfect participle clauses
having + 3 rd verb form
cater
to
decoy
effect
Repairing/Having been repaired by an expert, the computer was as good as new again
Having been repaired...
Does the participle clause refert to any grammatical tense?
No it doesnt. The grammatical tense is used in the main clause.
churn
out
cancel
out
Living/Having lived in London, he is able to participate in many exciting events
Living...
Does the subject of the participle clause have to be the same as in the main clause?
Mostly yes.
However there are some exceptions especially when we talk about the cause.
improve the.......
odds