Так как у модального глагола Must
нет формы будущего и прошедшего времени, то в таких ситуациях вместо него
используется модальный
глагол Have to:
Из-за того, что глагол Can
не имеет формы будущего времени, для описания действия в
будущем он заменяется на “be able to”:
1) you had to
do it. You will
have to do it.
2 ) you had
to learn this rule. You will have to learn this rule next
week
3 ) you could
speak to him about it. You will be able to speak to him about it
4 )she could help you. She will be able to help you.
5 ) we had
to go home.
We will have to go home
6) Who
could teach him business?
Who will be
able to teach him business?