Part 5 · Building SentencesChapter 25 · Useful Structures

Lesson25.1

B1Page 109 of 155

So That, In Order To, Lest, So…That

Purpose (why?): to, in order to, so that, lest. Result (what happened?): so…that, such…that, too…to, enough to.

At a glance

Key chart
Purpose: why?
  • to / in order to / so as to + V1I study to learn.
  • so that + can / could / will / wouldI study so that I can pass.
  • lest + should + V1 (formal)Walk slowly lest you should fall.
  • so as not to / in order not toI left early so as not to be late.
Key chart
Result: what happened?
  • so + adjective + thatIt was so hot that we stayed in.
  • such (a) + adjective + noun + thatIt was such a hot day that we stayed in.
  • too + adjective + toIt was too hot to go out.
  • adjective + enough + toHe is old enough to drive.
Flowchartso or such?
  1. Start
  2. Is there a noun after the adjective?
    Yes
    such (a)such a good film, such nice people
  3. soso good, so quickly

Purpose

I went to the shop to buy milk.

She studies hard so that she can win a scholarship.

We left early so as not to miss the bus.

Walk carefully lest you should slip.

Result

It was so hot that we stayed inside.

It was such a hot day that we stayed inside.

The tea was too hot to drink.

He is old enough to drive.

The same idea, three ways

too … toso … that … notnot … enough to
He is too weak to walk.He is so weak that he cannot walk.He is not strong enough to walk.
The box is too heavy for me to lift.The box is so heavy that I can't lift it.I'm not strong enough to lift the box.

Practice

Answer the questions. Get 7 out of 10 to finish this lesson.

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