Nancy didn't seem____(be)happy today.But I don't know why.

Nancy didn't seem____(be)happy today.But I don't know why.
Nancy didn't seem____(be)happy today.But I don't know why.

Nancy didn't seem____(be)happy today.But I don't know why.
填：to be
分析 ：seem to do sth 固定用法‘ 似乎……
加油!不明白再问!

Nancy didn't seem (to be) happy today.But I don't know why.
南希今天看起来似乎不高兴，但我不知道为什么。

1. 解法：把 be 改成 to be。seem 后可跟动词不定式。2. 翻译：今天南希看上去似乎不大高兴，但是我不知道因为什么。