Auxiliary verbs such as can, may,must, and should accompany main verbs. Form their negatives by placing not after the auxiliaries. The contracted forms can't, mustn't, and shouldn't are generally used, but note that no contraction is used with may.
She can speak English.
She can not espeak English. She can't speak English
We must go there.
We must not go there.We mustn't go there.
Change the following setences from affirmative to negative. Use both the full form and the contracted form (except for may).
1.- We can meet your later.
(We cannot meet your later. Wecan't meet you later.)
2.- You may sit here.
3.- We should tell her about ir.
4.- He may leave on wednesday.
5.- They can go by plane.
6.- We must wait here.
7.- I can understand himeasily.
8.- She shoul sit near the window.
9.- We must do the same thing again.
10.- She can play the piano well.
11.- He can understand everything I say.
12.- You should watch television every night.
13.- She may pass her examination.
14.- You can see him later.
15.- You may fish here.
Form questions with auxiliar verbs by placing the auxiliary before thesubject
She can speak English. Can she speak English?
We should go there. Should we go there?
Change the following statements to questions.
1.- They should obey the rules.
(Should they obey the rules?).
2.- They both can speak English well.
3.- Betsy should spend more time on her English.
4.- We may sit in these chairs.
5.- They can meet us at two o'clock.
6.- I may call you later.7.- He should eat less meat.
8.- He may tell her.
9.- We should speak to her about it.
10.- They may leave now.
11.- You could go by plane.
12.- You could send them a cable.
13.- I should stay at home more.
14.- Allan may wait in his office.
15.- Al can go with us to the beach.
16.- she could leave inmediately.
May shows pernission.
You may in now. (You are permitted to enter.)May also indicates pissible future action.
Hey may leave tomorrow. (He hasn'n decided yet.)
Change each of these these sentences to introduce may.
1.- It is possible that he'll return later.
(He may return later.)
2.- perhaps she'll help us with this work.
(She may help us with this work.)
3.- It is possible Len will bet at the meeting tonight.
4.- perhaps loretta will lend usthe money.
5.- Perhaps she will call you later.
6.- Possibly Frank will offer to lend his car.
7.- Possibly the wather will get warmer tomorrow.
8.- Ut is possible that she is sick.
9.- It is possible you will feel better later.
10.- Pherhaps it will not rain this afternoon.
11.- It is possible that we shall be later for the meeting.
12.- Perhaps he will not want to go with us.
13.-possibly they will go plane.
14.- Perhaps they will go to South America instead of to Europe on their vacation.
B.- Answer each of these questions using may. Also add I'n not sure at the end of your answer.
1.- Wil Lois help us with the work?
(She may help us with the work. I'm not sure.)
2.- will lan pass all his examinations?
3.- will David be back by noon?
4.- Will may drive us to thebeach?
5.- Are you going to the movies tonight?
6.- Are you going to Europe on your vacation?
7.- Will Nell wait for us after the lesson?
8.- Will you see Liz tomorrow?
9.- Will Fran lend us the money which we need?
10.- Are the Kleins going to take the children with them to Toronto?
Have To, Must
Have to and must express necessity or strong obligation. Have to is the more commonly usedterm.
You must go home. You have to go home.
Linda must work tonight. Linda has to work tonight.
Substitute have to for must in the following sentences.
1.- He must leave at once.
(He has to leave at once.)
2.- They must stay there at least an hour.
3.- You must have more practice in coversation.
4.- He must have more practice in conversation.
5.- They must help her with thah work....