by
by himself与什么可以转换？
himself与什么可以转换？
by himself可以转换: on his own
He did it on his own.
这件事他独立完成了。
He was doing it all by himself.
全都是他独自一个人干的。
He placed great reliance on his own ability .
他非常信赖他自己的本领。
He could not have buckled a bridle on his own .
他顾不得备自己的马鞍了。
He would not do that on his own initiative .
他不肯自动这样办。
He had to find a haven on his own .
他不得不自找避难的地方。
He can be left to work on his own .
工作可交给他一个人去做。
by后面接we的什么形式？
by后面接we的宾格，具体内容如下。
英语里的宾格是人称代词，人称代词有主格宾格之分，主格有I,he,she,it,you,we,they，宾格有me, him, her, it, you, us, them。主格要放在主语位置，宾格要放在宾语位置。主语位置都知道，一般在句首，如I am a teacher.
在英语中，宾语有两个位置，一个在动词后跟宾语，注意不是所有的动词都需要跟宾语。另一个在介词后跟宾语，如：I give him a book.
wwwby后面加什么？
1、by 地点名词，表方位，意为：“在……旁边”。如：by the lake/river/tree/window/door等。
例，She searched the top of the hill and stopped to rest on a big rock by the side of the path.她到了山顶，然后停下来在路边的一块大石头上休息。
2、by 时间名词，意为：“到……时，在……之前”。如：by now/then/this time/next Friday/the end of等。
例，By the end of last year,another new gymnasium had been completed.到去年年底，又有一座新体育馆峻工了。