新概念青少版 1B Unit 17

Unit17 Smile, please!笑一笑！句型与结构词课文注释:题目：Smile, please —这是摄影师对摄影对象发出的典型指令。

图1—5：smile/watch/look/come/take 这些词都是祈使动词。

在can/can’t后面它们也是原形。

图1—5：can后面接不带to的不定式（与祈使动词形式相同）can balance，can do，can take等。

在疑问句中，can放在主语前面：Can you balance? (与Are you…?/Is he…? 等用法相同)，主语后面接不带to的不定式。

否定式can’t的构成方式与isn’t/aren’t类似。

（我们教给学生can’t而不是cannot，can’t更常用，而cannot不常用，在某些情况下cannot似乎过于强调否定了。

现在不要把它介绍给学生。

）图1：can balance on this ball — can在这指能力。

do it/that — do是及物动词：它后面总是跟一个宾语，如：it/this/that。

I can try can在这里指“可能性”=“it is possible for me to try”（我有可能试一试）图2：as well —与too可以互换使用，放在动词短语的后面。

图3：on my knees —即“kneeling”（跪着）。

我们在所有描述身体部位的短语中都用on: on my/one’s head/back/front/hands/feet等等。

It’s fun — fun是名词补语，it’s fun的意思是It is enjoyable（有趣的）。

图4：good at/useless at + 名词—两个形容词都与at搭配。

图4和图5：gymnastica，Maths（Mathematics的缩写）有一类名词以-ics结尾，形式上是复数，但是它们表示某个研究或实践的学科名称的时候，后面总是跟单数动词：Maths is fun.（美式英语中把缩写成Math，而不是Maths。

football players in the park not in the street
fields
behind the church
not near the river
boats on the river not on the beach
men in front of the cinema not near the shops
boats in front of the shop not near the school
cars on the bridge not near the college
people beside the river not in the park
02 New words
English
Chinese
Can you do Maths?
I can’t do Maths.
I am useless at Maths.
useless
A merry smile lit up her face.
The elephant can balance on this ball. The man can balance on the line.
LUCY: Oh, yes! I can balance on a ball
as well. It's easy! Look at us, Vikki!
FLORA: Look at me now, Lucy! I'm on my knees! Can you balance like this? LUCY: Yes, I can do that, too. It's fun!
New grammar Make the sentence Choose the answer Make the order &write

Can+主语（I、you、he、she）+动词原形
疑问句：
主语（I、you、he、she）+can+not+动词原形
否定句：
主语（I、you、he、she）+can+动词原形
肯定句：
一课一练
Lily can take a photo of us. Can Lily take a photo of us? Yes, she can. No, she can't. Those little girls can wait for their teacher. Can those little girls wait for their teacher? Yes, they can. No, they can't. My brother can pass me the jar. Can your brother can pass you the jar? Yes, he can. No, he can't. Julia can see the dogs in front of the church. Can Julia see the dogs in front of the church? Yes, she can. No, she can't.
difficult 困难的
1
difficult（反义词）
2
easy
3
drive v. 开，驾驶 drive a car
4
ride v. 骑 ride a bike/horse
5
speak v. 说 speak English/Chinese
6
tennis n. 网球 play tennis

5.as well ? 6.easy 简单的 7.on one’s knees 跪着
8. good at ? 9. gymnastics 体操 10. useless 差劲的 11. Maths 数学 12. Music 音乐
13. take a photo ? 14. gym 体育馆
1.smile 微笑 2.watch 看
No, I can't. You're both good at gymnastics. But I'm useless. I can't do it.
Never mind, Vikki! You can do Maths and Music and I can't! I'm useless at Maths.
6.easy ? 7.on one’s knees 跪着
8. good at 擅长
9. gymnastics ? 10. useless 差劲的 11. Maths 数学
12. Music ? 13. take a photo 照相 14. gym 体育馆
1.smile ? 2.watch 看 3.balance 保持平衡 4.try 尝试
/dʒɪmˈnæstɪks/ gymnastics
/dʒɪm/
gym
Never mind!
take a photo
Smile, please!
1.smile 微笑 2.watch 看 3.balance 保持平衡 4.try 尝试 5.as well 也 6.easy 简单的 7.on one’s knees 跪着
这是摄影师对摄影对 象发出的典型指令。
smile useless ride