4.1. Define what clause it is.
1. He is so happy that he wants to dance and sing!
a) purpose b) result c) reason d) manner
2. It looks as if Nicole doesn't want to talk to Bob any more.
a) purpose b) result c) reason d) manner
3. I will help you with your homework so that you can go to the dacha.
a) purpose b) result c) reason d) manner
4. She behaves as though she is the cleverest person in the world!
a) purpose b) result c) reason d) manner
5. Bill couldn't start the car due to the fact that it had been very cold at night.
a) purpose b) result c) reason d) manner
4.2. Choose the right answer (clauses of purpose)
1 They put us a sign to prevent people coming closer.
A for B from C to avoid D in case
2 Stephen has bought a computer he can work at home.
A so that B to avoid C for D in order to
3 I have come here talk to you.
A in case B to C for D so that
4 I will take a coat it is cold outside.
A for B in order to C from D in case
5 Barbara is keeping to a diet keep fit.
A so as to B from C for D to avoid

1. The clause in sentence 1 is a result clause. The word "so" indicates that the person is so happy that they want to dance and sing.
2. The clause in sentence 2 is a reason clause. The phrase "it looks as if" indicates that there is a reason why Nicole doesn't want to talk to Bob anymore.
3. The clause in sentence 3 is a purpose clause. The phrase "so that" indicates the purpose of helping with homework is to be able to go to the dacha.
4. The clause in sentence 4 is a manner clause. The phrase "as though" indicates the manner in which she behaves, as if she is the cleverest person in the world.
5. The clause in sentence 5 is a reason clause. The phrase "due to the fact that" indicates the reason why Bill couldn't start the car.

4.2. Clauses of purpose:
1. The correct answer is C) to avoid. They put up a sign to prevent people from coming closer.
2. The correct answer is A) so that. Stephen has bought a computer so that he can work at home.
3. The correct answer is D) so that. I have come here so that I can talk to you.
4. The correct answer is B) in order to. I will take a coat in order to stay warm outside.
5. The correct answer is A) so as to. Barbara is keeping to a diet so as to keep fit.