for 后面是跟时间段
since是跟时间点,从.开始
1.she's has her dog for last christmas
for 改成 since
2.l haven't seen him since two years.
since 改 for
3..they llove making fools of theirrrrrsellves.
make fool of ,不是fools
4.don't make fun her.that isn't fair.
make fun of her,要加of
5.i think you did a mistake when you told your mother.
did 改称 made
6.sarah and lucy are my friends for many years.
are 改为 have been
for 时间段,要用完成时
7.you told me that five times since last week.
told 改为 have told
从上个礼拜五到现在,你已经说过5次了.用完成时