4. The room is so dark. We can't see anything
→ The room was too dark for us to see anything.
→ The room isn't bright enough for us to see anything.
→ It is such a dark room that we can't see anything.

5. He was so poor that he couldn't buy this house
→ He was too poor to buy this house.

6. That film was very stupid. The children can't see it
→ That film was too stupid for the children to see.
→ That film wasn't intelligent enough for the children to see.
→ It was such a stupid film that the children can't see it.

7. She was very stupid. She couldn't do an easy sum
→ She was so stupid that she couldn't do an easy sum.
→ She was too stupid to do an easy sum.

8. Nam ran so fast that we couldn't follow him
→ Nam ran too fast for us to follow him.

9. Hoa wrote so badly that I couldn't read
→ Hoa wrote too badly for me to read.

10. He runs too fast for us to catch up with
→ He runs so fast that we can't catch up with him.

11. The hat is very expensive. I can't buy it.
→ The hat is too expensive for me to buy.
→ The hat is so expensive that I can't buy it.

12. The room is too small for us to live in.
→ The room is so small that we can't live in it.

13. The cake is too hard for them to eat.
→ The cake is so hard that they can't eat it.
→ It is such a hard cake that they can't eat it.

14. The tea was too hot for me to drink
→ The tea was so hot that I couldn't drink it.
→ It was such hot tea that I couldn't drink it.

15. The rock was too heavy for him to lift.
→ The rock was so heavy that he couldn't lift it.

16. He is too stupid to add one and one.
→ He is so stupid that he can't add one and one.

17. My grandfather is too old to work now.
→ My grandfather is so old that he can't work now.

18. Nam sang too badly for us to hear.
→ Nam sang so badly that we couldn't hear him.

19. He speaks too fast for me to hear anything.
→ He speaks so fast that I can't hear anything.

20. He wrote too badly for everyone to read.
→ He wrote so badly that everyone couldn't read it.

21. The children couldn't go swimming because the sea was rough
→ The sea was too rough for the children to go swimming.

21. He was very drunk, so he couldn't answer my question.
→ He was too drunk to answer my question.

22. Mai is good. She can pass the examination.
→ Mai is good enough to pass the examination.

23. This holiday is so expensive, I don't think I can go.
→ It's such an expensive holiday that I don't think I can go.

24. I didn't arrive in time to see her.
→ I didn't arrive early enough to see her.