He said he would come but he did not ( )

应该是either
它用于否定句中
too用于肯定句中
而 though 和 although 是这样的
虽然的意思.

它可以放句首,也可以放句末. 用法的话,你可以和ALTHOUGH 一起来记.

although 与 though的用法区别

一、用作连词

表示“虽然”，两者大致同义，可换用，只是 although 比 though 更为正式：

Though [Although] it was raining，we went there. 虽然下着雨，但我们还是去了那儿。

Though [Although] it was barely four o’clock, the lights were already on. 尽管才四点钟，灯已经亮了。

Though [Although] we are poor, we are still happy. 我们虽然穷，仍然很快活。

二、用作副词

although 一般不用作副词，而 though 可用作副词，且一般放在句末(不放在句首)，意为“可是”、“不过”：

It’s hard work; I enjoy it though. 工作很辛苦，可是我乐意干。

He is looking fit, though. 但他看起来很健康。

You can count on him, though. 不过你可以指靠他。

三、用于习语

在 as though(好像，仿佛)，even though(即使，纵然)等固定短语中不能用 although：

She closed her eyes as though she were tired. 她闭上眼，仿佛很疲劳似的。

We felt as though we had witnessed the whole thing. 我们感到仿佛目击了整个这件事似的。

He is an h