so you just, just rocking to the side as if he might just fall off the branch,剛才還翻身好像要從樹上掉下來一樣

fall off跌落；下降

Be careful not to fall off the ladder.

當心別從梯子上掉下來。

Mary scrape her knee when she fall off her bike.

瑪麗從腳踏車上摔下來擦傷了膝蓋。

they're gonna cross over into another area of forest它們會到另一片森林去

cross over跨越； 交叉

I cross over the pedestrian overpass.

我走過天橋。

Who can cross over such raving wind and water?

誰能穿過這片狂亂的暴風和洪水么?

He was completely asleep just then,它睡得好熟

asleep, sleeping, sleepy這組詞的意思不完全相同,其區別在于：

1.asleep和sleepy主要用作表語。asleep的意思是“睡著”,而sleepy的意思是“想睡”。例如：

The baby fell asleep; and I feel sleepy.孩子睡著了,我也犯困了。

2.asleep, sleepy和sleeping都可用作定語,這時的意思也不相同。asleep表示“睡著的”, sleepy表示“貪睡的”,而sleeping除表示“睡著的”外,還可表示與睡眠有關的東西。試比較：