1.What's the matter with sb=What's wrong with sb.询问某人/某物怎么了。
例子:What's wrong with the machine.这台机器出什么问题了。
2.感官系动词，后面接形容词，形成主语+系动词+表语。
feel 感觉
He feels ill.自我感觉生病了。
feel cold/happy/bad.
look 看上去。
He looks pale 他看上去很苍白。
She looks younger than her age.她看上去比实际年龄年轻。
look 其他搭配
look at sb/sth 看某人/某物
look for 寻找
look into 调查
look after sb 照看某人。
3.show
( vt )展示，给......人看
show me your ruler.给我看下你的ruler
show sb around .带某人四处逛逛。
(n)展览，秀
a talk show 脱口秀
a talent show 才艺秀
4.for +时间 持续一段时间
比如: I live in Nanchang for ten years.for只接持续性动词。
He must stay in bed for a week.
4.must 情态动词接动词原形.无人称和数的变化。
He must do his homework.
