1. My old house is not as spacious as my current house.

2. He was expected to perform worse than he did.

3. This time Mike's brother run more slowly than him.

4. I think Jim will have a lower position in our company than you. 

5. I didn't decorate my cake as beautifully as Jane. 

6. Last year Peter didn't invest as a large amount of money on his business as this year.

7. Jim's computer is not as costly as mine. 

8. Playing comeputer games is not as time saving as playing sports. 

1)My current house is more spacious than the old one.

=>My old house is not as spacious as my current house.

2)He performed better than he was expected.

=>He was expected to perform worse than he did.

3)This time mike runs faster than his brother.

=>This time mike's brother runs more slowly than him.

4)I think you will have a higher position in our company than Jim.

=>I think Jim will have a lower position ịn our company than you.

5)Jane decorated her cake more beautifully than I did.

=>I didn't decorate my cake as beautiful as Jane.

6)This year peter invested a larger amount of money in his business than last year.

=> Last year peter didn't invest as a large amount of money in his business as this year.

7)My computer is costlier than Jim's.

=> Jim's computer is not as costly as mine.

8)Playing sports more time-saving than playing computer games.

=>Playing computer games is not as time-saving as playing sports.

Xin ctlhn!Chúc bạn học tốt.🥰