[Grammar] Usage of until

[daemon99]

1) I had never seen white jeans until when one of my colleagues came to work wearing them last Sunday.
2) I had never seen white jeans until one of my colleagues came to work wearing them last Sunday.

Can someone please tell me which of the above sentence(s) sound(s) natural? Can we use when, after, before after until? Are the below sentences fine?

3) I can't wait till after my wedding to talk to you about this.
4) He had never been abroad until before last summer.

 

[emsr2d2]

1) I had never seen white jeans until when one of my colleagues came to work wearing them last Sunday. Incorrect. "When" is not needed.

2) I had never seen white jeans until one of my colleagues came to work wearing them last Sunday. Correct.

Can someone please tell me which of the above sentence(s) sound(s) natural? Can we use when, after, before after until? Are the below sentences fine?

You can use "when" after "until" in a question:
Until when will you work there? (I don't like how it sounds but it's right!)


3) I can't wait till after my wedding to talk to you about this. Correct.

4) He had never been abroad until before last summer. Incorrect.
He had never been abroad until last summer.
He had never been abroad before last summer.

See above.