411. For the above reasons, I think it's a good idea to have a rule that forbids people from smoking in certain public places and office buildings.
本句可用于结论段，表达作者对某一问题的建议。It is a good idea to do sth.意为“……是一个好主意”。forbid sb. from doing sth.意为“禁止某人做某事”，也可以说prohibit sb. from doing sth.。如：
Family finances prohibited him from going to college.
For this purpose, I have decided to take practicing medicine as my future career.
For these reasons, I think that receiving college education in Taiwan is wise.
We have reasons to believe that corporal punishment should be strictly prohibited.