(Sometimes) That helps. (有時)那挺有幫助的。
I just wasted my time. That didn't help! 我白白浪費了時間,根本沒什么幫助!
It might help. Just go and try it. 有可能會起到作用。去試試吧。
Leave me alone. You're not helping. 別管我,你不會幫到什么。
Did you buy your wife some flowers? 你給你老婆買花了沒?
That didn't help. She's still mad at me. 根本沒用,她還在生我的氣。