一、Should、shouldn’t、can、can’t、could、couldn’t之后用动词原形，词形不变
1、You should look,then cross the road. You should eat fruit/apples.
You should take the right should say hello to my friends.
You should hold my hand,too.
2. You shouldn’t walk in the road. You shouldn’t jump on the bed.
3. I can do it very well. She was three couldn’t swim.
4. When I was two years old., I could laugh. I couldn’t run.
二、表达内心感受：happy/sad/tired/bored/angry/hungry/thirsty
1. Can I have some water?I’m thirsty. 2. I’ve got a present.I’m happy.
3. I lost my favourite toy. I’m sad. 4. I want to eat a hamburger.I’m very hungry.
5. Can we play chess?I’m bored. 6. I played basketball.I’m so tired.
7. Today I won a chess I feel happy.
8. Yesterday I lost my bag.I can’t find it. I feel sad.
9. I can smell some nice noodle soup. I feel hungry.
10. It’s raining and I can’t go out to play.I feel bored.
Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life.
青春不是年华，而是心境;青春不是桃面、丹唇、柔膝，而是深沉的意志、恢宏的想像、炽热的感情;青春是生命的深泉涌流。
Youth means a temperamental predominance of courage over timidity of the appetite, for adventure over the love of ease. This often exists in a man of sixty more than a body of dy grows old merely by a number of years. We grow old by deserting our ideals.
青春气贯长虹，勇锐盖过怯弱，进取压倒苟安。如此锐气，二十后生有之，六旬男子则更多见。年岁有加，并非垂老;理想丢弃，方堕暮年。