motive可數嗎

She distrusted his motives for wanting to see her again.

她懷疑他想再見她一面是別有用心。

He acted from base motives.

他的行為動機卑鄙。

He tried to get a fix on the young man's motives, but he just couldn't understand him.

他努力瞭解這個年輕人的動機，但就是弄不清楚。

Their motives remain a mystery.

他們的`動機仍然是個謎。

Her motives for helping are questionable.

她幫忙的動機令人生疑。