天气冷,我想我得买把伞,因为看起来要下雨了。

天气冷,我想我得买把伞,因为看起来要下雨了。

It's cold and I think I will have to buy an umbrella because it looks as if it'll rain.

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It's cold and I think I will have to buy an umbrella because it looks as if it'll rain.

it 在这里是形式主语,指代天气情况。 looks 是动词 look 的第三人称单数形式,意思是"看起来"。 as 在这里是连词,表示"如同"的意思。 if 是连词,表示"是否"或"好像"的意思。 it looks as if 是一个固定搭配,表示"看起来好像...",用来表达对某种情况的推测或判断。

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