提建议或给予忠告的常用词汇和句子: 
Should: 
"You should try to speak English." 
"You shouldn't speak too fast." 
Ought to: 
"You ought to read more English books."
Could: 
"You could always find a English pan1 pal2." 
Why don't you: 
"Why don't you join a English club?" 
If I were you, I'd... 
"If I were you, I'd English channel."
Recommending: 
"I recommend you to watch 8 o'clock morning news." 
Suggesting: 
"My English teacher suggested me to buy a good English dictionary." 
Advise: 
"My father advised my little sister not to watch TV too much," 
Advice: 
(Advice是一个不可数名词。就是说我们不能说一个advice, 而要说some advice or a piece of advice)
"My grandma will give you some advice on this." 
"Our teacher gave her a very useful piece of advice: to make a English Pan pal." 
Remember 记住了: 
大多数人不喜欢听别人的建议和忠告。为了避免一开始就引起他人的反感,你可以这样表达: 
"Have you considered..." 
"Perhaps you could..." 
"Do you think it's a good idea to...?"  
"Would you mind if I say something...?"