so far 到目前为止；那么远
as far as sb. knows/sees据某人所知
by far(最高级前，比较级后)起强调作用
in the distance在远处
from/ at a distance从远处
keep sb. at a distance
used to do过去曾经、常做
be used to doing 习惯于
be used to do被用来做
make good/ full use of充分利用
come into use开始使用
it is no use doing 干没有用
be made up of =co
nsist of 由组成
make up for弥补
