Here are the corrections for each of the sentences:

1. This **movie** is not **more** interesting **as** the **one** we **saw** last week.
Correction: This movie is not **as** interesting **as** the one we saw last week.

2. My brother **never** enjoys **classical** music **and** I don’t **too.**
Correction: My brother never enjoys classical music **and** I don’t **either.**

3. The **author** of this **novel** is the same **like** that **one.**
Correction: The author of this novel is the same **as** that one.

4. The concert **show** was **quite** different **than** what I **thought.**
Correction: The concert **was** quite different **from** what I thought.

5. Hoang is very **interesting** in rock **and** roll and his classmates **are** **too.**
Correction: Hoang is very **interested** in rock and roll and his classmates **are** **too.**