人教七年级下册英语第十二单元unit12语法解析

七年级下册英语第十二单元语法解析
Unit 12 What did you do last weekend?语法解析
1.play badminton 打羽毛球
play +运动play soccer play tennis play sports
play the + 乐器play the guitar
play with…和某人＼物玩耍
2.I worked as a guide at the Natural History Museum.我在自然历史博物馆当导游。

work as：担当,从事
He works as a cleaner in a hospital.
3.How interesting！
此句是感叹句。

由how 引导的感叹句，其句子结构也分为三种：
How ＋形容词/ 副词＋主语＋谓语！”。

如：
How careful she is! 她多么细心啊！
How fast he runs! 他跑得多快啊！
How ＋形容词＋a/an ＋可数名词单数＋主语＋谓语！”。

如：How beautiful a girl she is! 她是个多么漂亮的姑娘啊！
How ＋主语＋谓语！”。

如：
How time flies! 光阴似箭
由what 引导的感叹句，其句子结构可分为：
What + a/an ＋形容词＋可数名词单数＋主语＋谓语！”。

如：
What a nice present it is! 它是一件多么好的礼物啊
What ＋形容词＋可数名词复数/不可数名词＋主语＋谓语What beautiful flowers they are! 多么漂亮的花啊！
What fine weather it is today! 今天天气多好啊！
！
1一般过去时的特殊疑问句
含有实意动词特殊疑问句结构为：
疑问词＋did+主语＋动词原形＋其它？
20）---What did you do last night?
---I did my homework.
21）---Where did you go last week?
---I went to Shanghai with my parents.
That’s all for today!
Thank you!
含有be动词的特殊疑问句结构为：
疑问词＋was / were+主语＋其它？如：
11）---Where were you last night?
12）---We were at my uncle’s house.
13）---How was your weekend? ---It was great.
2.A family of mice were in the kitchen on Saturday morning. on +某日＋mornig/afternoon/
evening.
in + morning\afternoon\evening
3.It’s important to learn a second language.
It 是形式主语，真正的主语是to learn a second language .
It 作形式主语的常见句型：
1. 代作主语的动词不定式，其句型为（1）It be adj. (for sb.) to do sth.（2）It be adj. of sb. to do sth.
（3）It替代作主语的动名词的常见句型：
It’s no good/use doing…
It’s (well)worth doing…
It’s (well)worth one’s while doing/to do
1.But I was so tired that I went to sleep early.但是，我是如此的累，以至于很早就去睡觉了。

“so…that”结构表示“如此……以致”，so后跟形容词或副词，that后引出结果状语从句。

例如：
I was so busy at that time that I didn't go to sleep for three days.那时我很忙，一连三天都没睡觉。

The noise was so loud outside that I could sleep no longer.外面的噪声这样大，我再也睡不着觉了。

The pop star sang so beautifully that he was asked to sing again and again
注意：当that引导的结果状语从句为肯定句时，so ... that ...可以与be ... enough to do转换；当从句为否定句时，可以与too ... to ... 或be not ... enough to do转换。

如：
2.We saw a big snake sleeping near the fire.
see sb do sth 看见某人做过某事，
often see him draw a picture.
. see sb doing sth 看见某人正在做某事。

When I pass the window I see him drawing a picture.
3.We shouted to our parents to let them know about the danger.
Shout to/at 朝某人大喊
let sb do sth 让某人做某事
4.Snakes don’t have ears but can feel things moving .蛇没有耳朵但能感觉到东西在动。

feel sb/sth doing 感觉某人/某物在做某事
类似的感官动词有watch see hear 等
Watch sb doing
See sb doing。