MOET - Grade 8 - Unit 3 - Grammar 1 - Must vs. have to vs. ought to

must stop

(*must* dùng cho các luật lệ nói *miệng* hoặc trên *giấy*) At a traffic light, you ........ at a red light; a red light does not mean you must accelerate.

must fasten

(*must* dùng cho các luật lệ nói *miệng* hoặc trên *giấy*) Passengers ......fas..... their seat-belts.

must raise (their)

(dành cho các luật lệ nói *miệng* hoặc trên *giấy*) Students ...... hands to speak.

ought *not* to exercise

*Giving advice*, đồng nghĩa với *should not* Margaret ....not.....exer..... too much. It might cause injury

ought to exercise

*Giving advice*, đồng nghĩa với *should* Margaret ......exer.... more so she will be better prepared for the marathon.

Do you have to wear

....... a uniform at school? (you)

have to buy

I ...... flowers for my mother-in-law. My husband asked me to buy them. (cho một hành động, *không liên quan đến luật lệ*, và *bị bắt* phải làm vì có *người khác* yêu cầu)

must buy

I ...... flowers for my mother. It's her birthday and I want to do something special for her. (cho một hành động, *không liên quan đến luật lệ*, và *phải* làm vì thấy *cần thiết*)

must clean

I ...... the house before mum gets back. I want her to find it all neat and tidy. (clean)

have to call

I ...... the travel agency. *My boss* wants to book a flight. (call)

ought to eat

I ....... less meat. (*= should*)

must call

I ....... the travel agency this afternoon. *I* need to book a flight to Texas. (call)

must take

I .......tak........... more exercise. I am gaining weight these days. (tập thể dục vì *tự mình* muốn mình đẹp hơn)

*have to*

If *someone else* thinks it is important, we will use the word ..........

*must*

If *the speaker* thinks it is important, we will use the word ......

ought not to stay

Margaret .......... at home in front of the TV. She should go to the fitness center with us. (*= should not*)

should not stay

Margaret shou.......... at home in front of the TV. She should go to the fitness center with us.

have to take

My doctor says I .......tak....... more exercise. (tập thể dục do *ông bác sĩ* yêu cầu)

have to tidy up

Sorry, I can't come out now. I ........ my room before I'm allowed out. (tidy up)

must write

Students ...... the answers in ink. (đây có phải là *luật* in ra trên *giấy* hay *quy định* không?)

will have to leave

To get to Leeds by 10, I .......lea.... London before 6 tomorrow.

had to leave

To get to Leeds by 10, I .......lea.... London before 6 yesterday.

will have to

Tom ....... wear a uniform *next year*.

had to

Tom ........ wear a uniform *last year*.

has to wear

Tom ........... a uniform at school.

had to buy

We *must* buy another ticket. *BUT*: We .......... another ticket *yesterday*.

have to go

We ..... It's closing time. (go)

must go

We ....... It's already midnight. (go)