be bad for 或是be harmful for 希望对你有帮助。
be harmful for后面接名词,多是人或物,如Eating junk food is harmful for you.be harmful to 后面接动词,如It is harmful to eat junk food. do harm to 1.损害…,伤害 2.对 有坏处
do harm to 或者be bad for
be harmful to