We use clauses of purpose to explain why somebody does something. We can express positive purpose using: in order to/so as to + infinitive (formal) He stayed up late in order to/so as to write another chapter of his book. so that/in order that + can/will (present/future reference) I need to use my credit card so that/in order that I can buy the novel online. so that/in order that + could/would (past reference) She left work eorly so that/in order that she could meet the author at the book-signing. We can express negative purpose using: • in order not to/so as not to + infinitive only read e-books in order not to/so as not to fil my room with books. so that + can't/won't (present/future reference) We have to be very quiet so that we won't wake the baby. so that + couldn't/wouldn't (past reference) / didn't watch the film so that i wouldn't find out the ending before l'd finished the book

abduldibirov    3   14.01.2021 22:39    1