interjection 語氣詞
An interjection is a part of a speech that shows the emotions of the speaker!
語氣詞是相當重要的，可以表達出一個人的情緒。

hmmmmm
嗯...（思考的時候用）
D: Hey Mumu, what do you think I should do to make my English pronunciation sound better?
木木，你覺得我怎么練習好我的發音呢？
M: Hmmm... I think you should learn Interjections.
嗯...我覺得你可以學習語氣詞。
D: Hmmm... That actually sounds helpful!
嗯...聽上去挺有用的！

Jeez...! 天啊!
（表示驚訝或者厭煩的時候用）
Jeeez that watch is expensive!
天啊，這個表也太貴了吧！

Phew!
松了一口氣的時候用
M: I am so sorry it was raining badly outside that is why I am late!
不好意思，下大雨，我遲到了。
D: You are lucky the meeting was cancelled.
你很幸運，會議取消了。
M: Phew! (sigh) that was close!
唷...差點...

Ahem！
要別人聽你講話的時候用
Ahem! Ahem! Ladies and gentlemen may I please have your attention?
阿咳...阿哼...（清嗓子）...先生們，女士們，注意啦!

Oops 哎呀
常在不小心犯錯時用
Oops I didn't mean to break your heart into a million pieces.
哎呦，不小心傷了你的心。