[考点快忆] 表示肯定推测的情态动词有：must“一定;准是”，may“也许;可能”，might“或许”;表示否定推测的情态动词有：can't“不可能”， couldn't“不会”，may not“也许不”，might not“或许不”;can表示推测时不用于肯定句，may表示推测时不用于疑问句。
[考点快忆] 回答must时，肯定答语用must,否定答语用needn't或don't have to。回答need时，肯定答语用must,否定答语用needn't。回答may时，肯定答语用may，否定答语用mustn't 或can't。
[考点快忆] must “必须”;have to“不得不”; need “必须;需要”; can(could)“能;可能”;may (might) “可以;可能”; shall，will (would)“将;会;愿意;要”; should“应当”。
“had better (not) + 动词原形”表示建议;have to / has to / had to的否定，疑问形式要借助于助动词do / does / did。
四. There be 的句子结构
肯定句的形式为：There be + 名词(单数或复数)+地点状语或时间状语。
There is an eraser and two pens on the desk. 桌子上有一块橡皮和两支钢笔。
There are two pens and an eraser on the desk. 桌上有两支钢笔和一块橡皮。
否定形式为：There be + not + (any) + 名词+地点状语。
There is not any cat in the room. 房间里没猫。
There aren't any books on the desk. 桌子上没书。
(2)there be句型的疑问句就是将be提到句首：Be there + (any) +名词+地点状语
肯定回答：Yes, there is / are. 否定回答：No, there isn't / aren't.
-Is there a dog in the picture?画上有一只狗吗
-Yes, there is. 有。
-Are there any boats in the river?河里有船吗
-No, there aren't. 没有。
(3)特殊疑问句：How many . . . are there (+地点状语)
某地有多少人或物回答用There be . . .
There's one. / There are two / three / some . . .
有时直接就用数字来回答。One. / Two . . .
-How many students are there in the classroom?教室里有多少学生
-There's only one. / There are nine. 只有一个。/有九个。
(4)如果名词是不可数名词，用：How much + 不可数名词 + is there + 地点状语
How much water is there in the cup?杯中有多少水
This is the present that he gave me for my birthday
I don’t like people who talk much but do little.
The cars which are produced in Hubei Province sell very well.
2. 作宾语：She is the person that I met at the school gate yesterday.
The book that my grandmother gave me is called “The Great Escape”.
What’s the name of the young man whose sister is a doctor?
The girl whose father is a teacher studies very hard.
I’ll never forget the day when I first came to Beijing.
1. who 指人，在定语从句中作主语。例如：
The person who broke the window must pay for it.
The boy who is wearing the black jacket is very clever.
Do you know the young man (whom) we met at the gate?
Mr Lee (whom) you want to see has come.
3. whose 指人，在定语从句中作定语。例如：
The girl whose mother is ill is staying at home today.
I know the boy whose father is a professor.
A dictionary is a book which gives the meaning of words.
Here is the book (which) the teacher mentioned yesterday.
I’ve read the newspaper that(which) carries the important news.
Who is the person that is reading the newspaper over there?
6. when 指时间，在定语从句中作状语。例如：
I’ll never forget the time when we worked on the farm.
He arrived in Beijing on the day when I left.
7. where 指地点，在定语从句中作状语。例如：
This is the house where we lived last year.
The factory where his father works is in the east of the city.
四. 关系代词 whom， which 在定语从句中作介词宾语时，可以和介词一起放于先行词与定语从句之间，有时为了关系紧凑也可以将 whom 与 which 与先行词紧挨着书写，而将介词置于定语从句的后面。
That was the room in which we had lived for ten years. = That was the room
which we had lived in for ten years.
1. 只能使用that,不用which 的情况：
(1) 先行词是all, few, little, nothing, everything, anything 等不定代词时。例如：
All that he said is true.
(2) 先行词被only, no, any, all,等词修饰时。例如：
He is the only foreigner that has been to that place.
He was the second (person) that told me the secret.
This is the best book (that) I have read this year.
He talked about the people and the things he remembered.
2. 只能用which，不用that 的情况：
The meeting was put off, which was exactly what we wanted.
The thing about which he is talking is of great importance.