1. What about …..句型，意为"……怎么样？"相当于How about....。About为介词，其后常跟名词（短语）、代词或v.-ing形式。
该句型常用于以下两种形式：
（1） 向对方询问情况或打听消息。如：
I like learning English.What about you?
What about this book?
（2） 征求对方的看法、意见或者向对方提出建议、请求，相当于Would like ......?（语气更委婉）。如：
What about a cup of tea?
What about choosing that blue tie?
二者不同点：
How about 可以用来表达对事物的惊讶："How about those dogs?" - "What about " 则没有这项意思.如果你提供多项事物让人选择,那麼必须使用 "How about" ："Here are three jackets you might buy.How about the gray one?".
【拓展】初中阶段，常见"提建议"句型总结：
Let's do sth
You'd better(nor) do sth.
Shall we do sth?
Would you mind doing sth?
Why don't you/Why not do sth?
2.Why 意为"为什么"，对原因提问，引导的特殊疑问句可与what .....for引导的问句可互换。
Because +从句
Because of +n./pron./短语。
这两种用法可以互换。如：
I didn't buy the book because I had no money.= I didn't buy the book because of no money.
【注意】because与so同一句中只能用其一，有类似用法的如though/although与but.
2. It takes sb. Some time to do sth. 做某事花费某人多少时间。It是形式上的主语，动词不定式是真正的主语。
"by +交通工具"是固定介词短语，表示"乘坐、使用某种交通工具"，注意交通工具前不能使用冠词等任何修饰语。对这个短语提问要用how.
【拓展】交通方式的其他表达：
（1） in/on+限定词+交通工具名称，如in his car,on the bike/bus/train,on foot and so on.
（2） ride+限定词+交通工具名称，意为"骑......去......",相当于go to... ...by......。
3. how's the weather?意为"天气怎么样？"How 为疑问副词，weather为不可数名词.答语为：It's +表示天气状况的形容词。如：
Sunny /rainy/windy/cloudy/snowy/foggy
(1) How 's the weather?=What's the weather like?
How was the weather yesterday?=What was the weather like yesterday?
How will the weather be tomorrow?=What will the weather be like tomorrow?
(2) 在句末可以加上"介词+地点/时间"等短语。如：
How's the weather in Kunming= What's the weather like in Kunming.
4. What does sb.look like?意为某人看上去怎么样？
（1） 主语+be+描述人物外貌物征的形容词;
（2） 主语+have/has+名词（名词前可以有多个形容词修饰）。
如：
What does your mother look like?
She's a bit fat./He has short straight hair.
该句型中：look like 意为"看起来像......。Look为介词，后接名词或代词的宾格形式，意为"如同，像，和......一样"。
He looks like his father.
(3).易混句型：What be(am/is/are)sb.like.答语为：kind,friendly,strict,shy等表示性格和人品的形容词。
What's he like?
He's friendly and kind.
【拓展】
Look like：常指人的外观或外貌。
The little girl looks like her mother.
Be like 常指人的性格、人品。
What is he like?
He is very shy.
5.would like 意为"想要"，相当于want,但语气比want 委婉。Would like 中的would常缩写为'd。Would like可用于任可人称，没有人称和数的变化。其主要用法有：
（1） would like sth."想要某物"
I'd like some orange juice.
(2) Would like (sb) to do sth.
The teacher would like us to be positive in class.
(3) Would you like to do sth.?
肯定回答：Yes,I'd love/like to.
否定回答：I'd love/I like to ,but ......(陈述理由）。
5. It is /was +adj +(for/of sb.)to do sth. 是一个非常重要的句型，其中it 是形式主语，真正的主语是to do sth.意为"做某事（对某人来说）是......的。"
It is important for us to make full use of time.
It is careless of him to lose his wallet again.I think it necessary for him to be more careful next time.
【拓展】It is /was+adj .+ for sb. to do sth.与It is /was+adj.+of sb.to do sth.的区别：
（1） 两者使用形容词不同，前者常用于表示事物的特征物点，常使用表示客观形式的形容词，如easy/hard/difficult/interesting/important/impossible 等；后者一般表示人物的性格、品德，常用表示主观感情或态度的形容词：good /kind/nice/clever/foolish/right/friendly/careless/polite等.如：
It was hard for him to mend the car.
It was careless of the girl to leave her bag on the bus.
(2) 后者一般都可以转换成带有一个不定式作状语的句子，而前者则不能。
It was very kind of you to help me.=You are very kind to help me.