1.Don't worry.There is little time left.
little 改为 a little
2.Because I can't see anything,so I never go out at night.
去掉because或者so.
3.I here is going to have a concert next Sunday.
is 改为 am
4.What a beautiful weather it is today!
去掉a
5.Tom and jack are all students.
all 改为 both
6.Which is much interesting,Shanghai or Beijing?
much 改为 more
7.How long do you go home?Once a week.
How long 改为 How often
8.Your mother must keep health.
health 改为 healthy
9.What is the weather like yesterday?
is 改为 was
10.The pen is on the floor.Please pick up it.
pick up it 改为 pick it up
11.They have more rains this year than last year.
rains 改为 rain
12.He was died in a car accident.
去掉 was
13.A boy fell down a tree and broke his left leg.
down 后面加 from
14.Look!His clothes are on a fire.
去掉 a