然后，他开始害怕。

Then he began to be afraid.

youdao

他开始觉得害怕。

He began to feel afraid.

youdao

现在我害怕和他单独待在一起，因为我担心他会开始喜欢上我。

Now I'm afraid to be alone with him because I think he may start hitting on me.

youdao

他开始感到害怕。

And he feels afraid.

youdao

他开始感到害怕。

And he feels afraid.

youdao