摔，倒的過去式和原形

fall，摔倒，跌倒

過去式:fell，過去分詞:fallen

fαll過去式是:fell

v.

落下，跌倒（fall的過去式）砍伐，打倒

例句:

More than 100 trees were felled in just over an hour.短短一個多小時裡超過100棵樹被砍倒。

The goalkeeper was felled by a coin thrown from the crowd.守門員被人群中扔出的一枚硬幣擊倒

他扶住椅子後背，以免摔倒。He held onto the back of the chair to stop himself from falling

在英語詞彙中摔倒的過去式和原形分別是fall down， fell down 

“摔倒在地上”用fall on/onto the ground. 表達，或者只用fall over(摔倒)，不加地點。 fall over(sb./sth)是被絆倒的意思。 fall over yourself to do 則是不遺餘力去做某事

例句：

The sky won't fall down.天不會塌下來。You almost fall down， but not really.你差點兒跌倒，但是並沒有跌倒