Question

1) Fill in the blanks using "must" or "have to" (Preencham os espaços
em branco usando "must" ou "have to")
A. We____ to go there right now. Do we understand?
B. You____ stop drinking so much here.
C. Peter and Mary_____ see a doctor tomorrow.
D. He thinks he______ to get a good grade so he can pass.
E. Allan and Lucy______
to talk to the manager.
F. We______ work hard to get what we want.
G. She______ to cal! you. No, he doesn't
H. Do you_____
to go now? Yes, I do.
i. Sorry.I_____go.
​

Answer 1

Have to:

In general, have to expresses impersonal obligation. The subject of have to is obliged or forced to act by a separate, external power (for example, the Law or school rules). Have to is objective.

 Ex: In France, you have to drive on the right.

The basic structure for have to is:

subject + auxiliary verb + have + to-infinitive

Must:

In general, must expresses personal obligation. Must expresses what the speaker thinks is necessary. Must is subjective.

Ex:

I must go.

I must stop smoking.

You must visit us soon

The basic structure for must is:

subject + auxiliary verb must + main verb base

Resumo:

Must expressa algo subjetivo, pessoal a respeito do locutor, enquanto have to expressa uma ideia objetiva e impessoal.

Have to expressa, comumente, obrigações comuns, por outro lado must é utilizado para as obrigações específica.

A. We HAVE to go there right now. Do we understand?

B. You MUST stop drinking so much here.

C. Peter and Mary MUST see a doctor tomorrow.

D. He thinks he HAVE to get a good grade so he can pass.

E. Allan and Lucy HAVE to talk to the manager.

F. We MUST work hard to get what we want.

G. She HAVE to call you. No, he doesn't

H. Do you HAVE to go now? Yes, I do.

i. Sorry.I HAVE TO go.