The phrase "which is strange" is correct and usable in written English. You can use it to express that something is unusual, unexpected, or out of the ordinary. Example sentence: I arrived at the party ten minutes late, which is strange considering I usually arrive early.
Which is strange.
Which is strange, because my self-consciousness is so extreme".
I'm just hearing it from you guys, which is strange".
"It's a method which is strange to me.
Which is strange, because they're usually so lovable.
Most of the intellectuals in Trilling's cohort were blindsided by the sixties, which is strange.
I haven't boiled my kettle at all this week, which is strange.
The civic and aesthetic marvel of the High Line never gets old, which is strange.
There are no blacks in it, which is strange but also in a way symbolic.
Which is strange, because we all know what God looks like.
Which is strange: he must have known that Bach and his intellect were Lutheran.
I love the desktop app, it’s always running on my Mac. Ludwig is the best English buddy, it answers my 100 queries per day and stays cool.
Cristina Valenza
Retail Lead Linguist @ Apple Inc.