have to and must Flashcards
I have to do something
it is necessary to do it, I am obliged (/əˈblaɪdʒd/) to do it because the situation, the law, a duty, etc.
I have to wear glasses for reading.
for questions and negative sentences(for the present and past simple), we use
do/does/did
What do I have to do to get a new visa? (not What have I to do?)
we can say
I’ll have to
I’m going to have to
i might have to
i may have to
must or have to
give your own opinon (what you think is
necessary, or to recommend someone to do something)
I haven’t spoken to my mom for days. I must phone her
have to (not usually must) to say what
someone is obliged to do. this is a fact
must in
written rules and instructions
[you mustn’t park here]
had to (not must)
to talk about the past
I went to the class, but I had to leave early
mustn’t do sth
don’t do it (can’t is also possible)
[I promised I would be on time. I mustn’t be late]
don’t have to do sth
don’t need to do it (but you can if you want)
You don’t have to come with me. I can go alone.
instead of have to
have got to
[When has I got to go?]
have to exist in
all tenses and forms
must exist in
present and future
must to give
strong advice
(I really must stop smoking.
You must be here before eight o’clock tomorrow.)
must vs have to examples
I must stop smoking. (I want to.)
I’ve got to stop smoking. (Doctor’s orders.)
