[Grammar] I can have seen him ??

[wotcha22]

1. I could have seen him.

2. I can have seen him.

I've learned that 2 is ungrammatical but yesterday

I've come across sentence 1 on a English learning blog (owned by a Korean)

and wonder whether sentence 2 actually makes sense.

 

[bhaisahab]

No, it doesn't make sense.

 

[Rover_KE]

2 is ungrammatical.