新概念第二册自学导读 Lesson41(2)
新概念一直被视为英语学习的经典教材，新概念英语第二册课文对原有教学法进行调整，更利于学生加强交际能力。每课书相对独立，利于同学们自学。为了让同学们能够更加全面完善的学习新概念英语，新东方在线英语组老师将帮助同学们一起总结知识点~need一般情况下作完全动词：
I need to go to the dentist this morning.
今天上午我需要去看牙。
表示必要时，must的语气比need要强：
I must go to the dentist this morning.
今天上午我必须去看牙。
用 must的一般疑问句可以用 must/have to或 needn't来回答，而不用 mustn't：
“不必要”可用 needn't, don't have to来表示：
You needn't/don't have to work such long hours.
你不必工作那么长时间。
这种句型可用来表示说话人让对方选择或允许对方可以不做某事的主观意图。它的完成式和过去式分别为needn't have, didn't have to和 didn't need to:
mustn't表示绝对禁止。在说话人看来，根本没有选择余地
词汇学习 Word study
1.remind vt.
(1)提醒：
Remind me to post that letter.
提醒我把那封信寄了。
I needn't remind you of that terrible tie you bought yesterday.
我不必提醒你昨天买的那条糟糕透了的领带。
He reminded his wife that they needed to buy some coffee and sugar.
他提醒妻子他们需要买些咖啡和糖。
(2)使……想起：
The smell of cabbage reminds me of school.
卷心菜的气味使我想起了学校。
She reminds me of her sister.
她使我想起了她的姐姐/妹妹。
2.remark，observe与 notice
(1)remark与 observe都可以表示“说”、“评论说”，它们比say要正式：
‘You're looking very well!’She remarked/observed.
“您的气色看上去真好!”她说。
He remarked/observed that it was too hot in the room.
他说屋里太热了。
(2)notice和observe都可以表示“注意到”、“察觉到”，但有一定区别。notice 通常指无意中“察觉到”;observe 则可以指有意观察，比notice更正式：
I've noticed/ observed that he telephones her oftener than before.
我发现/注意到他现在给她打电话比以前次数多了。
She observed the picture critically for a moment.
她用挑剔的目光看了一会儿那幅画。
I didn't notice his leaving.
他走的时候我没注意到。
练习答案 Key to written exercises
1.关键句型练习答案
C 1 mustn't 2 mustn't 3 needn't 4 needn't 5 mustn't
2.难点练习答案
1 remarked 2 noticed 3 remarks 4 notice
3.多项选择题答案
1 a 2 a 3 c 4 d 5 c 6 b
7 b 8 a 9 d 10 a 11 c 12 b
最后祝同学们学习顺利，取得好成绩。还在等什么，快来新东方在线学习吧~
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