placing the object between subject and the verb

Question

I was watching 三体 ep2 and I came across this sentence 我这房子本来买了就是结婚用的 Why did they put 这房子 before 买了?

Answer 1

It is called [topic + comment] sentence structure.

• [这房子] is the topic

• [本来买了就是结婚用的] is the comment

Example:

• [SVO]:我來煮這頓飯 [S = 我; V = 來煮; O = 這頓飯]

I am cooking this meal

• [topic + comment]: 這頓飯我來煮 [topic = 這頓飯; comment = 我來煮]

This meal, I am cooking it

[topic + comment] structure emphasizes the object.