ملخص الدرس / الثآنية ثانوي/اللغة الإنجليزية/Grammar/could-must-should- ought to- in order to-so as to- so that...

To / so as to and in order to:

We use to, so as to and in order to to express the purpose of an action.

They went to/ in order to/so as to England to learn English.

To express negative purpose, we use not to, so as not to and in order not to.

The company has increased the wages so as not to/ in order not to disappoint its workers.

They went to England not to learn English, but to do business.

B.So that and in order that.

We can also use so that and in order that to express the purpose of an action.

so that/in order that + modals will, can and may.

We are advertising the new product consumers саn ) may/so that will know about it.

so that/in order that + will not/won't

We are advertising the old product so that consumers won't forget about it.

so that/in order that + modals should/would/might/could

We advertised them so that /I in order that consumers would/ should/ might could know about them.

so that/ in order that + wouldn't/might not/could not

They arrived at the shop early so that/ in order that they wouldn't/might not miss the sales.

We also use so that for purposes:

when one person does something so that another person does something else:

e.g.: I lent her some money so that she could buy a car.

with can and could:

e.g. He trains 3 hours so that he can take part in the competition. (main verb “trains” in the present => so that ... can ... )

He trained 3 hours so that he could take part in the competition. (main verb "trained" in the pasnt => so that ... could ...)

when the purpose is negative:

e.g.: The actress is wearing a wig so that she won't be recognized (main verb “is wearing" in the present => so that...won't...)

The actress was wearing a wig so that she wouldn't be recognized (main verb "was wearing" in the past => so that ... wouldn't ... )