1. must的用法：
先看几句课文的句子：
She must be at least thirty-five years old.
My dear, it must be terrible to be grown up!'
In the play, she must appear in a bright red dress and long black stockings.
must的用法：前两句表示推测（肯定是..），第三句表示义务(必须...)
1）表示推测：肯定是...
比如：你看到一个人在雪地里光着膀子跑步。
他肯定是疯了。
90% 可能：He must be crazy .
50% 可能：He may be crazy.
30% 可能：He might/could be crazy
他肯定没疯!
90% 可能：He can’t be crazy.
特别注意：不是mustn’t，mustn’t表示千万不要做......
50% 可能：He may not be crazy.
30% 可能：He might/could not be crazy.
“我当年嫁给你一定是瞎了眼了。”
90% 可能：I must have been blind when I married you.
50% 可能：I may have been blind when I married you.
30% 可能：I might/could have been blind when I married you.
“不，你当时一定没有瞎了眼。”
90% 可能：You can’t have been blind.
50% 可能：You may not have been blind.（当时可能并没有瞎了眼）
30% 可能：You might/could not have been blind.
造句练习：
Mom：Tom,你没事吧？你一定是太累了。
Tom, are you all right? You must be tired.
Son： 我感觉不舒服。我可能生病了。
I don’t feel comfortable. I think I may be sick.
Mom：不，你一定是病了。
NO, you must be sick. What happened to you?
Son：可能昨晚着凉了。
Yeah, I may have caught a cold last night.
Mom：不，你肯定不是着凉了。（听记1）
你肯定是昨天吃了太多冰激凌。
You must have eaten too much ice-cream yesterday.
2）表示义务：必须...
你必须得学会英文。
You must learn English.或You have to learn English.
细微区别：
must 强调命令和义务。原因可能是我觉得英文重要，所以要你学。
You must learn English, because I think it is very important.
have to 强调客观原因。比如这里每个人都只会英文，你不会就无法交流。
You have to learn English, because everybody only speaks English there.
.
未来，我们必须学会英文和中文。
In the future, we must learn both English and Chinese.
或者：In the future, we will have to learn both English and Chinese.
过去，我们必须坐在教室里学习。（听记2）
(不可以用must，must表示必须，没有过去时态)
2. In spite of this, she often appears on the stage as a young girl.
让步状语：
虽然，尽管：
In spite of = Despite后面跟名词
虽然，尽管：Although, Though , Even though, Even if后面跟句子
注意：有although，无but
造句练习：
尽管困难重重，我们还是完成了任务。
In spite of enormous difficulties, we still completed the task.
= Despite enormous difficulties, we still completed the task.
= Although there were enormous difficulties,we still completed the task.
虽然天气不好，但是我们还是玩的很开心。
In spite of the bad weather, we still had a lot of fun.
= Despite the bad weather, we still had a lot of fun.
= Though the weather was bad, we still had a lot of fun.
虽然我很丑，但我很温柔。
Although I am not good-looking, I am gentle and kind.
Even though I am plain-looking, I am gentle and kind.
纵然英文虐我千百遍，我依然待它如初恋。（听记3）
3. Last year in another play, she had to wear short socks and a bright,orange-coloured dress.
orange-coloured
构词法：形容+名词+ed 构成的复合形容词
复合形容词的思维逻辑：
英语中定语位置的基本规律是短前长后，但为了把复杂后置定语提前使得信息更为简洁，人们用两个以上的词用短横连接，构成符合形容词。这对于说中文的人来说，反而更加容易理解，因为中文只有前置定语。
一个蓝眼睛的男孩：
a boy with blue eyes = A blue-eyed boy
一个红嘴唇的女孩：
a girl with red lips = a red-lipped girl
一个留着短发的女士：
a lady with short hair = a short-haired lady
一个留着长发的男士：（听记4）
一种长耳朵的动物：an animal with long ears = a long-eared animal
一种长腿的动物： an animal with long legs = a long-legged animal
一个好心的警察： a policeman with a kind heart = a kind-hearted policeman
一个热心的陌生人：a stranger with a warm heart = a warm-hearted stranger
一个厚颜无耻之人：a man with thick skin = a thick-skinned man
当然，复合形容词的种类还有很多(形容词+名词+ed是最常用的一种)，
以后遇到我们再细说。
听记答案
1. No, I think you can’t have caught a cold.
2. In the past , we had to learn in class.
3. Even though I was tortured by English for thousands of times, I still treat it as my first love.
4. a man with long hair = a long-haired man
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