for
for ever 永远
for example 例如
for good 永久地
for instance 例如
for the sake of 为了……的利益
for the time being 暂时,眼下
account for 说明(原因等)
allow for 考虑到,顾及
as for/to 至于,关于
ask for 请求,要求
but for 倘没有,要不是
call for要求;需要;邀请