核心问题
Yet the fact is we know very little about gorillas. (New Concept English, Book 4, L. 5)
... we know ... gorillas 是什么从句？为什么没有连词？
词典解答
... we know ... gorillas 是个表语从句。这里省略了连词 that。表语从句中的 that 能否省略呢？让我们引用权威英语语法著作 CGEL 的说法作为回答：
"When the that-clause is direct object or complement, the conjunction that is frequently omitted except in formal use, leaving zero that-clause ..." (p. 1049)
“当 that 从句充当直接宾语或表语(主语补语)时,连词 that 常常省略,结果形成零 that 的从句,但是正式用法除外……”
- All I can tell you is [ ] he gives me the creeps every time I pass him. (NCE) 我能告诉你