They do all the work with hand和They do all the work by hand的区别
问题描述：
They do all the work with hand和They do all the work by hand的区别
答
by hand:
a) done or made by a person rather than a machine:We had to wash our clothes by hand.
b) delivered by someone personally, rather than being sent through the post, emailed etc
with hands:
with one’s hand(s) 用手(即不是用口，用脚，用眼睛等)。
如：We work with our hands. 我们用手工作。
He stroke the child with his hand. 他用手打这个小孩。
答
第一句是用手也不仅仅局限于手
第二句就是只用手
答
with hand用手完成或做什么,强调做某事比较艰辛,费了很多人力才完成,
by hand强调通过手工这种方式,而不是别的方式啊.