用be动词的适当形式填空.3.It --- hot yesterday.Yes.But it --- cool today.

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用be动词的适当形式填空.3.It --- hot yesterday.Yes.But it --- cool today.

用be动词的适当形式填空.3.It --- hot yesterday.Yes.But it --- cool today.
用be动词的适当形式填空.3.It --- hot yesterday.Yes.But it --- cool today.

用be动词的适当形式填空.3.It --- hot yesterday.Yes.But it --- cool today.
was,is
昨天很热.——是的,但是今天很冷
前半句用了yesterday,要用过去时,后半句说到today,是现在的情况,用一般现在时

was
is

was is

  yesterday----昨天,说明是过去的情况,所以这里是was。
  today------今天,说的是现在的情况,所以是is。
  It -was- hot yesterday.
Yes.But it -is- cool today.