rain可以做名詞和動詞，做名詞時意思就是雨水，做動詞時意思為下雨。rainy是形容詞，表示下雨的，多雨的。raining是動名詞，是rain的現在分詞形式，表示正在下雨。

rain的用法例句

1. The recent rain had churned up the waterfall into a muddy whirlpool.

最的一場雨把瀑布攪成了泥水漩渦。

2. She was born in the middle of a rain storm.

她出生在一場暴風雨中。

3. He stared at the rain spattering on the glass.

他凝視著雨點濺落在玻璃上。

4. His hair was plastered down to his scalp by the rain.

他的頭發淋雨后緊貼在頭皮上。

5. Acid rain is not straightforwardly attributable to the burning of coal.

酸雨并非簡單地由燒煤造成。

rainy的用法例句

1. Summer is a rainy season in China.

在中國，夏天是一個多雨的季節。

2. A rainy day is cold in this season.

這個季節雨天很冷。

3. The rainy season in the Andes normally starts in December.

安第斯山脈的雨季一般從12月開始。

4. It's rainy in Guangzhou now.

廣州正是多雨的時候。

5. It's either cloudy or rainy.

要么陰天要么下雨。