It’s a two-month holiday. She is a three-child mother. (最后两句计量中省略了形容词)

4. Must I / May I / Need I …? 用法：1Must I …? “我必须…吗?”

A: Must I finish the work? B: Yes, you must. / No, you needn’t。

2 Need I…? “我有必要…吗?”或“我需要…吗?”

A: Need I clean the house? B: Yes, you must. / No, you needn’t。

3 May I …? “我可以…吗?”表示请求。

A: May I go out for a walk now? B: Yes, you can. / No, you mustn’t / can’t。

5.hundred / thousand / million / billion: 前有具体数字，这些词不加s及of. 如：

nine hundred people, ten thousand students等。

这些词前若无具体数字，后加s和of. 如：

thousands of trees; many millions of people; hundreds of cars; billions of stars

但前若有several, 后常不加s和of：several million pounds

6.反意疑问句 (此处用QT表示反意疑问句后一部分内容) 的部分用法：

1something, nothing, anything, everything作主语，QT主语用it。

Something is wrong, isn’t it? / Nothing is difficult, is it?

2当主句中think的主语是第一人称时，QT要结合think后的从句而定：

I think Lucy can do well in the exam, can’t she?

I don’t think he will come here on time, will he?

3祈使句的QT一般用will you?(包括let us …。。)， 而Let’s …用shall we?

Get up now, will you? Don’t be noisy, will you? Be quiet, will you?

Please don’t talk, will you? Let us do it now, will you? Don’t talk in class, will you?

Let’s do it now, shall we? Let’s sing a song, shall we?

4There be句型，QT主语用there。

There is a man working in the field, isn’t there?

There used to be a meeting on Friday, didn’t there?

There won’t be a movie in the theatre, will there?

7.put on, wear, dress, in: 1put on,“穿上”后接物。表行为，是短暂动词。

You should put on your coat when you leave。

2wear,“穿，穿着”后接物，表状态，是延续性动词。

He always wears the yellow sweater in winter. I like wearing beautiful clothes。

3dress, “给…穿衣”后接人。You can dress yourself, baby。

Lucy is dressing her little brother now。

be dressed in后常接具有某种特征的衣物。也可直接加表示颜色的词。

The lady is dressed in a white skirt. The students are all dressed in yellow。

get dressed “穿好衣服”，常不接宾语： He went out as soon as he got dressed。

dress up (as) .。。“装扮(成)....。。” He dressed up as a clown. 他装扮成小丑。

4in, “穿着”后接具有某种特征的衣物，表状态，是介词，不可作谓语，可作状语。

也可以直接加表示颜色的词。 The woman in a white skirt is my teacher。

Do you know the girl in a red coat? (你认识那个穿着红外套的姑娘吗?)

I want to talk to the boy in black. (我想找那个穿着黑衣服的男孩谈谈。)

8.虚拟语气部分用法：在非真实条件句中要用虚拟语气，即if 从句中用一般过去时，而主句动词用would / should + 动词原形，表示与现在相反的主观设想，也可以表示在说话人看来实现的可能性很小的情况。(注意：虚拟语气中的be动词都要用were。)

If there were no air, people would die. (与现在事实相反)

If I got rich, I would travel around the world. (可能性很小)

9.other / others / the other / the others / another:

1如果不特定指出哪一个，是泛指，“另一个”要用another, 后加可数名词单数。

If you are still thirsty, you may have another cup of tea。

(没特定指出哪一杯茶，是泛指。cup是单数。)

another也可+数字+可数复数：The meeting will last another two hours. (再持续两小时)

We need another six desks. (此处两句分别相当于：two more hours; six more desks。)

2如果只有两个或只有两部分，就给出了范围，其中另一个或另一部分是特指 (other前有the。)， 有如下用法：

第一种，所说内容只有两个：

Mrs. Green has two sons, one is interested in math, the other (one / son) is good at science. 【只有两个，用the other, 不加s, 后面名词可省略。】又如：This pair of shoes is strange. One is blue, yet the other is green. “这双鞋子很怪，一只蓝色，而另一只绿色。”

第二种，只有两部分：此种情况下the other后接可数名词复数，或不接名词而只在the other后加s. Two children went there, but the other children / the others stayed。

Two fifths of the students in our class are boys, the other students / the others are girls。

3如果没有显示出只有两部分，未给出范围，则是泛指，不加the。

Lei Feng liked helping other people / others. Do you have any other questions?

Alice didn’t like that dress, so she asked to see some others。

4other的另一用法：用比较级的形式，体现最高级的含义。

He is taller than any other boy in his class. (划线中boy常用单数) =

He is taller than all ( of ) the other boys in his class. (划线中boy用复数)

他比班里任何男孩都高(他是班里男孩中最高的)。

10.how long / how often / how soon / how far: 1how long 是对长度或时间段提问。

How long is the river? -It’s 5,000 kilometers long. (对长度提问)

How long have you lived there? -For five months. / Since 2002. (对时间段提问)

2how often是对频率提问，如：never, sometimes, often, usually, always, once a week,

twice a day, three times a year, every day / year / month / week等。

How often do you watch TV? -Every two days. / Twice a week. / Sometimes。

【若只有次数，则用how many times 提问：

How many times do you watch TV a week? -Twice. / only once.】

3how soon 是对“in + 时间段”提问：