the first thing is像这种句子后加什么形式?属于什么从句?我是说 the first thing is to do还是doing？为什么？I found it difficult______(remember)now.为什么不是I found it is difficult……
问题描述：
the first thing is
像这种句子后加什么形式?属于什么从句?
我是说 the first thing is to do还是doing？为什么？
I found it difficult______(remember)now.
为什么不是I found it is difficult……
答
表语从句。
例如the fist thing is that wo must finish the work.
一般是the fist thing is that ...
答
the first thing is to do 是固定搭配,
第一件要做是事,还没有做,不定式表示将来时
I found it difficult to remember(remember)now.
it 是形式主语,
不定式to do sth 是真正的主语 也是固定用语