句首用法：
Just in case he is in an accident,Jay always wears his seabelt
Just in case Tommy and Julie have the measles they are not going to school.
用尾用法：
Jay might be in an accident So he always wears his seabelt just in case
Tommy and Julie may have the measles So the didn't go to school just in case.
沒有留言:
張貼留言