除了“I suggest”、“You should”，其实还有很多表达建议的地道英语：

"Have you considered…"
你曾想过...
"Have you thought about…"
你想过要...么？
"Perhaps we could…"
也许我们应该...

"Do you think it's a good idea to…"
你觉得...是一个好主意么？
"Why don't you join an English club?"
为什么不参加一个英语俱乐部呢？