Mokytoja Lijana: Practise your English

Have to / Has to = it is necessary
Don't have to / Doesn't have to = it isn't necessary

AFFIRMATIVE SENTENCES	SUBJECT	MODAL	VERB	EXAMPLES
affirmative sentences ( + ) NECESSITY: have to/has to means it is necessary.	I you we they	have to	clean get pick up have eat go work	I have to clean my room. You have to get a new book. We have to pick up the laundry. They have to have a notebook.
	he she it	has to		He has to eat dinner now. She has to go to work now. It has to work.

NEGATIVE SENTENCES	SUBJECT	MODAL	VERB	EXAMPLES
negative sentences ( - ) LACK OF NECESSITY: don't have to/doesn't have to means it is not necessary. You have a choice.	I you we they	don't have to	work do clean eat work go be	I don't have to work on Saturday. You don't have to do that. We don't have to clean the car. They don't have to eat pizza.
	he she it	doesn't have to		He doesn't have to work tomorrow. She doesn't have to go today. It doesn't have to be that way.

QUESTIONS	DO	SUBJECT	MODAL	VERB	EXAMPLES
questions ( ? )	Do	I you we they	have to	clean get pick up have eat go work	Do I have to clean my room? Do you have to get a new book? Do we have to pick up the laundry? Do they have to have a notebook?
	Does	he she it			Does he have to eat dinner now? Does she have to go to work now? Does it have to work?