last night, yesterday night

[Ju]

1. What time did you go to bed last night?

2. What time did you go to bed yesterday night?

What are the differences between the above sentences?

Thank you.

[5jj]

The second one is not incorrect, butt is just far less commonly used than 'last night'. I suggest that students use only 'last night'.

[emsr2d2]

Both "yesterday night" and "yesternight" are theoretically fine but will get strange reactions. Stick to "last night" as native speakers do.

[Rover_KE]

Stick to "last night" as native speakers do.

I agree, though 'yesterday evening' and 'last evening' are occasionally used to refer to a more specific time of day.

[5jj]

Both "yesterday night" and "yesternight" are theoretically fine but will get strange reactions. Stick to "last night" as native speakers do.

I agree about 'yesternight', though I would go further and say that it is incorrect in modern English. 'Yesterday night' is uncommon, but not strange, in my opinion.

[emsr2d2]

I agree about 'yesternight', though I would go further and say that it is incorrect in modern English. 'Yesterday night' is uncommon, but not strange, in my opinion.

Fair point, though it doesn't make much sense. "Yesternight" at least matches the construction of "yesterday" but "yesterday night" always sounds oddly wordy to me. But yes, "yesternight" doesn't fit modern English usage at all.

[BobK]

Both "yesterday night" and "yesternight" are theoretically fine but will get strange reactions. Stick to "last night" as native speakers do.

Even 'yestreen' [archaic]

b