1
must be\ must do 用于現(xiàn)在時(shí)
He keeps looking at you, he must like you.
他一直在看你，他一定是喜歡你吧
She looks so beautiful, she must be a model.
她好漂亮，她一定是模特吧
He has been working out for 5 years, he must be very strong.
他已經(jīng)健身5年了，他一定特別強(qiáng)壯吧
2
must have been\ must have done用于過去時(shí)
He didn't show up last week, he must have been on vacation.
他上周一直沒出現(xiàn)，他一定是去度假了
She must have been very excited, when her boyfriend proposed to her last night.
昨天晚上她男朋友向她求婚，她一定十分興奮。
You got a 20% pay rise, you must have done a great job.
你的薪水漲了20%，你一定做得特別好吧！
You must wear a suit when you have a interview.
你面試的時(shí)候一定要穿西裝
He must finish all his work before the meeting.
他必須要在會(huì)議前完成所有的工作
We must double confirm it before release.
我們一定要在發(fā)表前再次確認(rèn)
You must fasten your seatbelt when you're driving.
你開車的時(shí)候一定要系上安全帶
You must show your passport to the immigration officer.
你必須要向移民官出示護(hù)照
You must follow the rules.
你必須要遵守這些規(guī)則
You must see a doctor, you've been sick for a week.
你務(wù)必要去看醫(yī)生！你都已經(jīng)病了一周了！
You must read that book! It's amazing!
你一定要去看那本書！真的是太棒了！
You must come to our party tonight! It'll be so much fun!
你一定要來參加我們今晚的派對(duì)！一定會(huì)非常有意思的！
Why must she always interrupt me?
她為什么總是要打斷我？
Why must you argue with each other everyday?
你們非要每天都爭(zhēng)吵嗎？
Why must you make so much noise?
你什么偏要制造那么多噪音？
You may think the insurance is unnecessary, but it's a must.
你可能認(rèn)為保險(xiǎn)沒有必要，但卻是必不可少的
Eating Roast duck is a must if you come to Beijing.
如果你來北京，一定要嘗嘗烤鴨
It's a must to try different kinds of beer in Germany.
在德國(guó)嘗試不同種類的啤酒一定是必須要做的事
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