动词+by+ving形式（两句）
Tim finally got a satisfing score by studying hard.
The patient got better soon by listening to the doctor's advice.
need doing sth（两句）
We all need cherishing the time.
Since tomorrow is weekend,you needn't doing your homework in such a hurry.
used to do sth（两句）
He uesd to live here.
The fat boy used to eat a lot,but now he doesn't.
请参考.