1) It was last month that I saw him.
2) It was last month when I saw him.
3) It was in your house that I saw him.
4) It was in your house where I saw him.
Which are formal and which are informal?
Gratefully,
Navi
None of those are really natural English. Usually, in both formal and informal contexts, you would say I saw him last month / I saw him at your house.
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None of those are really natural English.
Usually, in both formal and informal contexts, you would say I saw him last month / I saw him at your house.