Глаголы HAVE (прош. HAD) и NEED (прош. NEEDED) в значении "нужно", "следует" требуют полный инфинитив (с частицей TO).
Глагол MUST не имеет форм прошедшего и будущего времени и заменяется на HAD TO и WILL HAVE TO соответственно.
Модальные глаголы MUST, CAN (прош. COULD) и NEED (прош. NEEDED) в значении "зря", "напрасно" требуют неполный инфинитив (без частицей TO).

Mary/have/to go/there - Present
Утверждение Вопрос (общий) - ответ Отрицание
  НАСТОЯЩЕЕ ВРЕМЯ 
Mary has to go there. - Does Mary have to go there?
- She does. / She doesn't.
Mary doesn't have to go there.
Mary/must/to go/there. - Past
  ПРОЩЕДШЕЕ ВРЕМЯ 
Mary had to go there. - Did Mary have to go there?
- She did. / She didn't.
Mary didn't have to go there.
Mary/must/to go/there. - Future
  БУДУЩЕЕ ВРЕМЯ 
Mary will have to go there. - Will Mary have to go there?
- She will. / She won't.
Mary won't have to go there.


Постройте предложения по моделям.
1. I/must/to be/here/yesterday - Past
     
. - ?
- . / .
.


2. The cat/need/to be fed - Present
     
. - ?
- . / .
.


3. There/must/to be/a sink/here - Future
     
. - ?
- . / .
.


4. There/can/to be/much snow/outside - Present
     
. - ?
- . / .
.


5. They/must/to show/new films/in this Cinema - Present
     
. - ?
- . / .
.


6. Sarah/have/to have/a little money/on her - Future
     
. - ?
- . / .
.


7. We/can (could)/to invite/a few people/at our place - Past
     
. - ?
- . / .
.


8. You/need/to bring/news/from him - Past
     
. - ?
- . / .
.


9. They/can (be able to)/to buy/a few apples - Future
     
. - ?
- . / .
.


10. Dad/need/to have/a lot of milk - Future
     
. - ?
- . / .
.
11. Bob and Jon/have/to go/anyway - Present
     
. - ?
- . / .
.
12. Sam/have/to get/some knowing - Present

     
. - ?
- . / .
.