請問以下2句句子係咪grammer都正確?

係,正確。
因為在感官的動詞後,
一係用 inf. without to,即什麼也不用加,
一係用gerund即加ing。

I saw him enter the house.
Should be: I saw him entered the house. 我見他走進屋裡.

I saw him entering the house. 我見他時他正進入屋裡.
OKay