[General] they hear their parents using

[glhf]

1. It can be compared to young children who successfully imitate the sentence structures they hear their parents using.
2. It can be compared to young children who successfully imitate the sentence structures they hear their parents are using.

What is the difference between the two sentences.

Thank you in advance

Source:English textbook

 

[Tdol]

Use the first. The second suggests that someone has told the young children about the sentence structures their parents are using.

 

[Rover_KE]

1. It can be compared to young children who successfully imitate the sentence structures they hear their parents using.
2. It can be compared to young children who successfully imitate the sentence structures they hear their parents are using.

What is the difference between the two sentences?

Welcome to the forum, glhf. Please note my corrections to your post.

Always tell us the source and author of any text you quote which you have not written yourself, please.