1
What you wear should be stylish and clean,and must definitely fit well.
你的穿着应该整洁漂亮，而且必须非常合身。
2
Candidates must satisfy the general conditions for admission.
候选人必须满足参选的总体条件。
3
At 29 Russell must be one of the youngest ever Wembley referees.
29岁的拉赛尔一定是有史以来温布利球场上的裁判员中最年轻的一个。
4
'You must be Emma,'said the visitor.
来客说：“你肯定是埃玛。”
5
In order to take that job,you must have left another job.
为得到那份工作，你肯定已辞去了另一份工作。
must
表示义务、意图或建议
必须，应该
I must leave at six today.
我今天必须六点钟离开。
I must write a letter to the head teacher.
我非得给校长写封信不可。(强烈意图)
You must go and see that film——you'd really enjoy it.
你得去看看那部电影，你会真的喜欢它的。(提建议)
表示推测
必定，一定
The light is still on, so he must be at home.
灯还是亮的，他一定在家。
The light was out. They must have gone to bed.
灯都熄了，他们必定睡了。
注意
1. must
表示推测时的否定式是
can't
或
couldn't
不可能
因为
must
只用于肯定句
语气很强
2. 若对过去情况的推测用
must have
加过去分词
表示主张
硬要，一定要
If you must go, at least wait till the rain stops.
如果你坚持要走，至少也要等雨停了再走。
The machine must break down at this busy hour.
正忙的时候机器偏偏坏了。
表示不可避免性
必然要，必定会
All men must die.
人总有一死。
must
与
have to
的比较
must
与
have to
都可以表示
“必须”
其区别如下
1) must
强调主观上认为“必须”做某事
而
have to
强调客观上要求
“不得不”
做某事
You have to wear uniform on duty, don't you？
你在值班时必须穿制服，是吗？
2) have to
较
must
有更多的时态
如过去式和将来时就要用
had to
与
will have to
Yesterday morning I have to call on a friend.
昨天早上我必须要去探访一个朋友
不用
must
但在间接引语里却往往用
must
Yesterday morning I told my father that I must call on a friend.
昨天早上我告诉父亲，我必须要探访一个朋友。
3) have to
有非谓语动词形式
但
must
没有
I hate having to get up so early.
我讨厌这第早就得起床。
4) 在回答
must
引起的问句时
如果是否定的答复
可用
don't have to
或
needn't
不必
但不能用
mustn't
一定不，必须不，不允许，不得
—Must I clean the dining room at once?
我必须马上打扫餐厅吗？
—Yes, you must.
是的，你必须马上打扫。
—No, you don't have to (=needn't) .
不必啦。
You mustn't smoke in the office.
你不得在办公室抽烟。
must
6
I must be getting back
我一定要回来。
7
You must see a doctor,Frederick.
弗雷德里克，你一定得去看医生。
8
This must be a very difficult job for you.
对你来说，这份工作想必很难。
9
This came as a surprise,I must say.
我得说这真是个意外。
10
It must be noted,however,that not all British and American officer scarried out orders.
然而，一定要注意不是所有的英国和美国军官都执行了命令。
11
Why must you do everything as if you have to win?
你为什么做每件事情都跟你非要赢似的？
12
'Go!Please go.'—'You must be joking!'
“走吧！请走吧。”——“你一定是在开玩笑吧！”
13
The new 37th issue of National Savings Certificates is a must for any taxpayer.
新发行的第37期国家储蓄债券是任何一个纳税人的必然之选。
14
If you must be in the sunlight,use the strongest filter cream you can get.
如果一定要呆在太阳底下的话，就擦上你能买到的防晒系数最高的防晒霜。
15
'Why don't you wear your jogging shorts Mum?'—'Well,my legs are too skinny,if you must know.'
“妈妈，为什么不穿你的慢跑短裤呢？”——“哦，如果你非要问的话，因为我的腿太瘦了。”
16
You are going to have to take a certain amount of criticism,but you must cope with it.
你肯定会遭到一些批评，但你必须去面对。
17
The doctor must not allow the patient to be put at risk.
医生决不能置患者于危险境地而不顾。
18
The soil must not be overwatered,especially during the first few weeks.
切忌土壤过涝，尤其在最初几周。
19
We must not forget your birthday.
我们一定不能忘了你的生日。
20
Mr Allen must pay Mr Farnham's legal costs.
艾伦先生应当支付法纳姆先生的诉讼费。
21
Equipment must be supervised if children are in the house.
如果孩子们在屋里，必须有人监管设备。
22
Reggae must be the only music that's got its own country—Jamaica.
雷盖音乐得到了一整个国家人民的支持，这个国家就是牙买加——这一点上它无疑是独一无二的。
23
I'm sure he must feel he has lost a close family friend,because I know I do.
我敢说他一定觉得自己失去了一位亲密的世交，因为我知道我是这种感觉。
24
I must have been a bore.
我一定让人觉得很无聊。
25
Miss Holloway had a weak heart.She must have had a heart attack.
霍洛韦小姐心脏不好，她肯定得过心脏病。
26
His only explanation was that he must have brought them home in order to continue his work.
他唯一的解释是，自己想必是为了继续工作而把它们带回家了。
27
The medical reports really must have suggested that he was really seriously hurt.
医学报告肯定已经指出他伤得的确很重。
28
In order to start reading this book you must have had some idea that the physical symptoms you were experiencing were due to anxiety.
开始读这本书之前，你一定已经了解到：你身体的不适症状是源于焦虑。
29
I must telephone my parents.
我一定要给父母打电话。
30
I must speak to Tania at once.
我要马上跟塔尼娅讲话。
