I mean what I said. 用于强调自己所说话语的重要性，多用于关系较密切的人之间。
A：Are you kidding?
你在开玩笑吗?
B：I mean what I said。
我可不是说着玩儿的。
2. 我又不是三岁小孩儿。I was not born yesterday.
I was not born yesterday. 这个短句多被年轻人使用，强调自己不再是个孩子，已具有办事的能力，是真正的成年人了。
A：Take good care of yourself while I’m out.
我不在时你要好好照顾自己。
B：Don’t worry! I was not born yesterday.
别担心!我又不是三岁小孩儿。
3. 少管闲事儿! It’s none of your business!
It’s none of your business! 用于表达对别人干涉自己事务的反感，告诫其他人不 要插手自己的事。
A：You should not spend money in that way. 你不能那么花钱。
B：It’s none of your business! 少管闲事儿!
4. 你帮了我大忙了。You helped me a lot.
此句还可以表达为“You did me a big favor.”用于高度评价别人对自已的帮助， 感激之情溢于言表!
A：You helped me a lot.
你帮了我大忙了。
B：You’re welcome.
不客气。
5. 你说得一点儿也没错。You can say that again.
You can say that again. 原意为“你可以将此事再说一遍”，这里引申为附和对方 所说的事情。
A：Lucy is very cute, isn’t she? 露西很可爱，不是吗?
B：You can say that again. 你说得一点儿也没错。
