1.rain 是不可数名词,所以要用单数does,不能用do
请看剑桥英语英英词典对名词rain的解释:
drops of water from clouds
examples:
Rain is forecast for tomorrow.
Come inside out of the rain.
We had heavy/light rain all day.(注意这个,并没有加a)
We got caught in pouring/torrential (= a lot of) rain without either raincoats or umbrellas.
There will be showers of rain/rain showers (= short periods of rain) in the east.
It looks like rain (= as if rain is going to fall).
cloud是可当可数名词,也可当不可数名词,这里的the clouds就是表示云的复数形式
2.it 指代上句的the vapour,(特指)因为是第三人称单数所以 come from要加s。It comes from the water 是典型的主谓宾的句型,in the river做the water的后置定语,修饰the water。
3.像1.讲到的那样,这里的cloud是不可数名词,所以用单数形式
补充:
the 加在名词前表示特指或者一类事物!这里没有强调特指所以用的是vpour的不可数形式!
不可数名词用 单数
cloud可以做可数名词
It做指示代词,指vapur````` come from是谓语 the water是宾语
in the river是状语
cloud可以做可数名词,也可以做不可数名词
1.句型:助动词+主语+come from 云是单三,当然是does喽
cloud是可数名词也可以是不可数名词
1.不可数名词用三单it指代,谓语动词用三单形式
云是可数的(一朵云)