(6) take, spend 和use的用法。
1) take指做某事用多少时间，句型是：It takes/took/ will take + sb. +some time + to do sth.
It took me three days to finish the work.
It will take you a while week to travel thought the forest.
It takes only one hour to fly to Shanghai.
2) spend指某人在某事（物）上花费时间或钱。句型是：
Someone spends + money/time + on something(in) doing sth.
She spent more than 500 yuan on that coat.
He didn't spend much time on his lessons.
He spent much time (in) correcting students' exercises.
Mother spent her evenings (in) washing clothes.
3) use表示使用工具、手段等。
Do you know how to use the computer?
Shall we use your car?
(7)reach, get 和arrive的区别。
1) reach是及物动词，后面要直接跟表示地点的名词作宾语。
After the train had left, they reached the station
We reached the top of the mountain at last.
2) get是不及动词，常与to连用，再接名词，后面接表示地点的副词时，不用to，get to常用于口语中。
When the students got to the cinema, the film had begun.
My sister was cooking when mother got home.
3) arrive是不及物动词，表示到达一个小地方时，用arrive at, 到达一个大地方时用arrive in。
The soldiers arrived at a small village
The foreigners will arrive in Shanghai tomorrow.