1. agree with

(1) 持一致意見、看法；同意

eg. I agree with you.
我同意你的意見。

eg. to agree with your argument
同意你的論點

(2) 與……相符合，與……一致

eg. Your story agrees with the facts.
你的敘述與事實相符。

(3) (氣候、食物等)相宜，適宜，適合(某人)的健康(或體質)

eg. This climate does not agree with him.
這氣候對他不適宜。

2. crack sb up

(1) 得精神病[非正式]

eg. She would have cracked up if she hadn't allowed herself some fun.
要不是她允許自己享受一些樂趣，她早就得精神病了。

(2) 哈哈大笑；使……哈哈大笑[非正式]

eg. She told stories that cracked me up and I swore to write them down so you could enjoy them too.
她講了些讓我哈哈大笑的故事，我發誓要把那些故事寫下來，以便你們也可以欣賞。

3. knock it off: 停止，住嘴

eg. Tim, knock it off, would you? Your singing is killing me.
別唱了好嗎？你的歌聲簡直要我的命！

eg. Knock it off! I'm trying to sleep.
別鬧了！我要睡覺了。