Purpose clauses

Link the two sentences with a purpose clause. 

Review the notes below if necessary.

Example:

I’m putting nets over my strawberry plants. I don’t want the birds to eat all the strawberries. 

I’m putting nets over my strawberry plants so that the birds won’t eat them.

1.- I am buying paint. I want to paint my hall door.

2.- He opened the lions’ cage. He intended to feed the lions.

3.- He left his rifle outside. He didn’t want to frighten his wife.

4.- He rushed into the burning house. He wanted to save the child.

5.- He read only for short periods each day. He didn’t want to strain his eyes.

6.- He killed the man who helped him to bury the treasure. He wanted nobody but himself to know where it was.

7.- He wore a false beard. He didn’t want anyone to recognise him.

8.-They talked in whispers. They didn’t want me to overhear them.

9.- Aeroplanes carry parachutes. The crew can escape in case of fire.

10.-We are putting bars on the lower windows. We don’t want anyone to climb it.

11.- Please shut the gate. I don’t want the cows to get out of the field.

12. He telephoned from a public call-box. He didn’t want the call to be traced to his own address.

 

FOR + ING

•         To convey the function of an object

         We use a thermometre for measuring temperature

         Utilizamos un termómetro para medir la temperatura.

TO/IN ORDER TO/SO AS TO

•         In affirmative clauses we can use any of them, in order to and so as to are more formal.

•         They are always followed by an infinitive.

•         The subject of the main clause and the purpose clause is the same.

I went to Madrid to learn Spanish.
I went to Madrid so as to learn Spanish.
I went to Madrid in order to learn Spanish.
Fui a Madrid para aprender Español.

IN ORDER NOT TO/SO AS NOT TO

•         In negative clauses we use in order not to or so as not to followed by an infinitive

I hurried so as not to miss the train.
I hurried in order not to miss the train.

         Me di prisa para no perder el tren. 

 

SO THAT/IN ORDER THAT

•         So that (and less frequently in order that) are followed by a clause

•         The subject of the main clause and the purpose clause is different

•         If the verb in the main clause is in the present or future, the verb phrase in the subordinate clause will be formed with can/will; if it is in the past, it will be formed with could/would

         I am lighting the fire so that the house won't be cold.      

         Estoy encendiendo el fuego para que la casa no este fría.

         I will give her a key so that she can get into the flat at any time.

         Le daré una llave para que pueda entrar en el piso en cualquier momento.

         I saved money so that my daughter could /would go to university

         Ahorré dinero para que mi hija fuese (pudiese ir) a la universidad.