In order to y so as to

In order to y so as to

In order to y so as to se utilizan para expresar la finalidad, purpose en inglés. Vamos a ver estos dos y el contraste con to infinitive, además de so that.

1. To   =   In order to   =   So as to + INFINITIVE

Remember that in order to and so as to are more formal than to, but the meaning is the same. So depending on the situation, if formal or informal, you will use to or in order to/so as to. 

Examples: I’m buying butter to make a cake (informal).

When the purpose is negative, we use «not» before to», in order not to and so as not to.

2. So that + Subject + Verb Example: if you are walking at night, wear white so that cars can see you.

So that means para que + subject (para que los coches te puedan ver). On many occasiones we use modal verbs after the subject, in this case «can«.  Now it’s your turn. Practise with these sentences:

Join these pairs of sentences with to-infinitives, in order to, so as to, so that or in case.  

1. I’m buying paint. I want to paint my hall door. ____________________________________________________________________

2. He left his rifle outside. He didn’t want to frighten his wife. ____________________________________________________________________

3. I wore boots. I didn’t want my feet to get wet. ____________________________________________________________________

4. Don’t let him play with scissors. He might cut himself. ____________________________________________________________________

5. I’ll post the card today. I want it to get there on Billy’s birthday. ____________________________________________________________________

6. I’ll take off my shoes. I don’t want to make any noise. ____________________________________________________________________

7. I’m saving up. I want to buy a helicopter.

____________________________________________________________________

8. I said it at the top of my voice. I wanted everybody to hear it. ____________________________________________________________________

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

KEYS

1. I’m buying paint to/ in order to/ so as to paint my hall door.
2. He left his rifle outside in order not to/ so as not to frighten his wife.
3. I wore boots in order not to / so as not to get my feet wet.
4. Don’t let him play with scissors in case he cuts himself/ so that he can’t cut himself.
5. I’ll post the card today so that it will be there on Billy’s birthday.
6. I’ll take off my shoes in order not to/ so as not to make any noise.
7. I’m saving up to/ in order to/ so as to buy a helicopter.
8. I said it at the top of my voice so that everybody could hear it.
9. Aeroplanes carry parachutes so that the crew can escape in case of fire.

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