Tuesday-完型天地
Monday-形容詞專項練習
Friday-專題之雙向閱讀
Thursday-閱讀天地之公路旅行
Wednesday-【乾貨】20個中國成語、俗語的中英對照
1.在肯定句或疑問句中Must, have to, and need to都可以用來談論責任、義務和重要行為。
1）I have no idea about the meeting. I must go to ask Peter.
我對會議一無所知。我必須去問彼得。
（must表示此事的重要性）
2）She has to communicate with clients from all walks of life.
她必須與各行各業的客戶溝通。
（has to表示義務、責任）
3）You need to study more if you want to get good grades.
如果你想取得好成績，你需要多學習。
（need to表示此事的重要性）
2.must and have to用來談論責任，一般我們還要加以區別：
must通常用於個人情感意志上覺得有義務；
have to則多用於工作和日常生活中的責任。
1）I must do this right now!
我必須現在就做！ （must表示個人意志）
2）You must finish the homework before watching TV.
看電視之前你必須先完成家庭作業。
3）Why must you be mean to me?
你為什麼對我這麼刻薄？
4）I have to go to Shanghai every week.
我每周都要去上海。 （have to表示工作需要）
5）When my parents were young they had to work hard.
我父母年輕時不得不努力工作。
6）You have to finish the work by next Saturday.
你必須在下星期六之前完成這項工作。
注意：must沒有過去式，過去時態中一般用「have to」
1）I had to stay overnight in Beijing.
我不得不在北京過夜。
2）She had to drive the kids to school.
她得開車送孩子們上學。
3）Did they have to leave so early?
他們非得這麼早就走嗎？
3.need to通常表達用於對某人來說重要的一件事，而不是指責任或義務。
1）She needs to see the dentist tomorrow.
她明天要看牙醫。
2）Does he need to go to work on Sundays?
他星期天需要去上班嗎？
3）Parents need to spend more time with their children.
父母需要花更多的時間和孩子在一起。
4. Must, Have to, and Need to的否定形式意思要注意區別！'Don't have to'和'Don't need to'意思是「不必，不需要」，表示不需要做什麼事，區別不大;'Mustn't'意思是「不能」，用來表示禁止做某事，與'Don't have to'和'Don't need to'意思完全不同。
1)You mustn't use your mobile phone while driving.
開車時不要用手機。
2)Children under 12 mustn't go into the street by bike.
12歲以下的兒童不得騎自行車上街。
3)Children mustn't be left alone in a car.
千萬不要把孩子單獨留在車裡。
4)In summer vacation millions of students don't have to get up early.
暑假裡，數百萬的學生都不必早起。
5)You don't need to worry as we all will help with it.
你無需擔心，我們都會幫忙的。
6)She doesn't need to worry about tuition.
她不必擔心學費。
7)I don't need to get up early next Monday!
下周一我不用早起！
5.對於由must引導的疑問句的回答，不可以用'Mustn't'，而是用'Don't have to'和'Don't need to'來回答。
Must I pay in advance?
我必須提前付款嗎？
No, you don't have to/don't need to.
不，你不必。
親愛的同學們，通過以上分析和例句說明，你會正確使用Must, Have to, and Need to了嗎？