Ex 1: rewrite the sentence with ''ought to''or''ought not to''.

1.her room is very dirty(clean it every day)

=> She ought to clean it every day

2.I play tennis badly(practice tennis more regularly)

=> You ought to practice tennis more regularly.

3.my father has a sore throat (not smoke so much)

=> He ought not to smoke so much.

4. Nam feels very tired (go to bed early)

=> He ought to go to bed early.

5.he had an accident last week (not drive so fast)

=> He ought not to drive so fast.

6.I catch flu (stay in bed)

=> You ought to stay in bed.

Brad and I are having ...THE... best holiday of our lives!

tìm và sửa lỗi sai

1. Nam often take a shower before going to school.

take=> takes

2. She is the more intelligent student in our school.

more=> most

3. You look sick. You'd look better going to the doctor.

going=> to go

4. My brother didn't watch that film and I didn't, too.

too=> either

5. It takes Hoa two hours doing the housework every day.

doing=> to do

6. There is a few milk in the fridge.

few=> little

7. How many is the red dress? It's 90,000 dong.

many=> much

8. We not spent our summer holiday in Dalat last year.

not=> didn't

9. Student in Việt Nam often have a three-months summer vacation.

three-months=> three-month

10. All the student enjoy to talk at recess.

to talk=> talking

XI. Arrange the following words and phrases into the correct sentence.

1) can't/the/piano/Hoa/sister/play/and/her/either/can't.

=> Hoa can't play the piano and her sister can't, either.

2) watching/prefers/to/brother/books/TV/my/reading.

=> My brother prefers watching TV to reading books.

or => My brother prefers reading books to watching TV.

3) in/how/pen/America/do/write/to/you/your/often/pal.

=> How often do your pen pal in America write to you?

4) the/I/card/post/buy/going/phone/office/am/to/to/a.

=>I am going to the post office to buy a phone card.

5) once/public/my/I/from/phone/office/week/parents/a.

=> I phone my parents from public office once a week.