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Necessity/Duty - Coggle Diagram
Necessity/Duty
PAST
HAD TO/HAD GOT TO/NEEDED TO
I had to buy a new suit.
OUGHT TO/SHOULD HAVE_EN
You should have taken a taxi.
WAS/WERE TO HAVE _ EN
She was to have given up smoking.
TO HAVE TO/TO BE OBLIGED TO/TO BE COMPELLED TO
I have had to buy a new pen.
AM/IS/ARE TO
We are to meet at five o'clock. (arrangement/plan)
You are to be here at 8 o'clock. (definite command)
The traffic regulations are to be observed. (instruction)
MUST
I must talk to him.
HAVE TO
We have to write a report.
HAVE GOT TO
I have got to go.
NEED TO
I need to see you.
OUGHT TO
You ought to buy more bread.
SHOULD
You should keep your promise. (recommendation)
SHALL
You shall do it immediately. (command)
FUTURE
SHALL/WILL HAVE/NEED TO
Don't put those books away yet. I shall need to see them again.
You will have to get up early.
QUESTIONS
Am I to wait?
INDIRECT COMMANDS
Wait till I come. - He says that I am to wait till he comes.