watch的過去式是什麼爲什麼

He watched the house for signs of activity.

他注視着那所房子裏的動靜。

I watched the car until it was out of sight.

我目送汽車,直到看不見爲止。

We watched the balloon riding high above the fields.

我們看着氣球高高地飄浮在田野上空。

We watched the lions from the safety of the car.

我們從車裏看獅子,很安全。

I watched the programme from beginning to end.

這個節目我從頭看到了尾。