题目内容：

英语否定疑问句
1.Which word did Daming not understand ? 2. Which word didn't Daming understand ?第一句是课本上的,而第二句应该是符合否定句变一疑问句啊.这两个都正确吧,只是有何不同?谢谢.

优质解答

两句都正确的.
第一句是把did not分开写的,而第二句是把did not连在一起写的.
个人认为,第二句更常用的.
如：
Why didn't you leave yesterday?
要比
Why did you not leave yesterday?更常见,更口语化.
还有许多的：
do not ——don't
does not——doesn't
will not——won't
shall not——shan't
can not——can't