什么是使役动词，请详细解释一下！

使役动词

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(flash动画教程)

使役动词是表示使、令、让、帮、叫等意义的不完全及物动词,主要有make(使,令),let(让),help(帮助),have(叫)……

使役动词:比如make,have,let,order.....
所谓使役,就是使什么怎么做.

比如I make the boy cry.我让那个男孩哭了.I have the girl wait for me.我让那个女孩等我.
总之,使役就是让什么怎么样,或怎么做.

使役动词有以下用法：
a. have somebody do sth让某人去做某事
??i had him arrange for a car.

b. have somebody doing sth.让某人持续做某事。
??he had us laughing all through lunch.

注意：用于否定名时，表示“允许”
i won't have you running around in the house.
我不允许你在家里到处乱跑。

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小议“使役动词”的用法
1. have sb do 让某人干某事
e.g:What would you have me do?
have sb/sth doing 让某人或某事处于某种状态，听任
e.g: I won't have women working in our company.