II, Change these sentences into active voice:

1, This tree was planted by my grandfather.

my grandfather planted this tree

2, A lot of work is done every day by us.

we do A lot of work every day

3. The rubbish was collected yesterday evening.

they collected the rubbish yesterday evening.

4, Many trees are cut down to make paper.

they cut down many trees to make paper.

5, English is considered the most international language.

people consider English the most international language.

6, A new school will be built very soon by them?

will they build a new school very soon ?

7, These doors should be shut before 5 p.m.

they should shut these doors before 5pm

8, I was given a pretty painting on Chrismas by Nam.

Nam gave me a pretty painting at Chrismas

9, Is recycled paper used by us ?

do we use recycled paper ?

10, Many lakes and rivers were destroyed by pollution.

pollution destroyed Many lakes and rivers

11, The time machine will be shown to the public.

they will show the time machine to the public.

12, Old car tires are recycled to make shoes and sandals.

they recycle Old car tires to make shoes and sandals.

1. The used plastic bottles are washed with water by people.
2. Music is always listened to in the morning by them.
3. Sports are often played every day by the students.
4. Coffee is never drunk for dinner me.
5. Used paper is reused to make shopping bags by people.
6. Recycled plastic is also used to make toys by people.
7. Butter and cheese are made using milk.
8. Bottles of milk are brought to my house by the man.
9. English is spoken all over the world by people.
10. This house is not used very often by them.
11. Is French taught in this school by them?
12. A lot of beautiful toys are made from recycled plastic.

1 : he used to borrow my pen

=> my pen used to be borrowed by him

2: he had finish his work on time 

=> his work has to be finished on time by him

3 : you needn't do all the homework 

=> all the homework needn't be done by you

4 : you ought to tell him early

=> he ought to be told early by you

5 : they don't use the room very often

=> the room isn't very often used by them

6 : they must widen the road to school this year

=> the road to school must be widened by them this year

7 : have you done your homework ? 

=> have been your homework done by you ?

8 : did you finish your work early ?

=> was your homework finished early by you ?

9: she has to pick fruit very early in the morning

=> fruit has to be picked very early in the morning

10 : the house was dirty because she hadn't cleaned it for weeks

=> the house hadn't been cleaned for weeks

Ex21: Chuyển các câu sau sang câu chủ động :

1. This tree was planted by my grandfather.

My grandfather planted this tree.

2. The rubbish hasn’t been collected.

We haven't collected the rubbish.

3. A lot of work is done every day.

I do a lot of every day.

4. Many trees are cut down to make paper.

We cut down many trees to make paper.

5. These doors should be shut before 5 p.m.

You should shut these doors before 5 p.m.

6. I was given a beautiful glass on my birthday by Hung.

Hung gave me a beautiful glass on my birthday.

7. I was asked many difficult questions by him.

He asked me many difficult questions.

8. These rooms are being cleaned by the girls.

The girls are cleaning these rooms.

1. My grandfather planted this tree

2. We have not collected the rubbish

3. I do a lot of every day

4. We cut down many trees to make paper

5. You should shut these doors before 5 p.m

6. Hung gave me a beautiful glass on my birthday

7. He asked me many difficult questions

8. The girls are cleaning these rooms

1.the mail had already been delivered by the mailman

2.my pen was used to borrow by him

3.many new things had to be created by him

4.all the homework neednt to be done.

5.he ought to be told early

6.the room isn't used very often

7.the road must to be widened to school this year

8.has your homework been done?

9.was your work finished early?

10.fruit has to be picked very early by her in the morning

How many trees are cut down to build that fence

There used to be less traffic when I was small

We were disappointed about the ending of the film