5/They like pizzas. I like hamburgers. (different from)

-> Their tatse is different from mine.

6/Lan is pretty, and her cousin is pretty, too. (as...as)

-> Lan is as pretty as her cousin.

7/Mr.Brown is 40 years old. Mrs.Brown is 40 years old, too. (the same...as)

-> Mr.Brown is the same age as Mrs.Brown.

8/Hung has a harsh voice, but his sister has a sweet voice. (different from)

-> Hung's voice is different from his sister's voice.

cho xin ctrlhn, cảm ơn :>

5.Their tatse is different from mine.

- S+tobe/V + different from + N/pronoun 

6.Lan is as pretty as her cousin.

- S +tobe/V + as + adj/adv + as + N/pronoun

7.Mr.Brown is the same age as Mrs.Brown .

- S+tobe/V + the same +(N) + as + N/pronoun

8.Hung's voice is different from his sister's voice.

- S+tobe/V + different from + N/pronoun 

@Chae