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le**e（离开）.get（得到）.keep（保持）.
make(使，令),let(让),help(帮助),h**e(有；让；从事；允许；拿)等。
使役动词后接受词，再接原形不定词作受词补语。
接宾语时，人称代词用宾格。
例句。1）he made me(宾格) laugh.
他使我发笑。
2）i let him go.
我让他走开。
3）i helped him repair the car.
我帮他修理汽车。
4）please h**e him come here.
请叫他到这里来。
3.使役动词还可以接过去分词作受词补语。
i h**e my hair cut every month.
我每个月理发。
4.使役动词的被动语态的受词补语用不定词，不用原形不定词。
1）(主)he made me laugh.
他使我笑了。
2）(被)i was made to laugh by him.
我被他逗笑了。
h**e：1） h**e sb do 让某人干某事。
eg:what would you h**e me do?
2）h**e sb/sth doing 让某人或某事处于某种状态，听任。
eg: i won't h**e women working in our company.
the two cheats had the light burning all night long.
3）h**e sth done 让别人干某事，遭受到。
eg:you 'd better h**e your teeth pulled out.
he had his pocket picked.
notes: "done"这个动作不是主语发出来的。
注意：用于否定名时，表示“允许”
i won't h**e you running around in the house.
我不允许你在家里到处乱跑。
make：1）make sb do sth 让某人干某事。
eg:they made me repeat the story.
what makes the grass grow?
notes: i was made to repeat the story.
2）make sb/sth done/adj./n 使某人/某物…
eg. the news made him happy.
he couldn't make himself heard above the noise of the traffic.
his actions made him universally respected.
he made her his wife.
3）make sb. sth
make sth. for sb. 为某人做某物。
eg. my aunt make me a kite.
my aunt make a kite for me.
get:1)get sb to do 使某人干某事。
eg: i can't get anyone to do the work properly.
2)get sth done 让别人干某事。
eg: i must get my hair cut.
can you get the work finished in time?
le**e:
1)le**e sb to do sth 让某人干某事。
eg: we left him to paint the gate.
i'll le**e you to settle all the business.
2)le**e sb doing 让继续处于某种状态。
eg: don't le**e her waiting outside in the rain.
we left him painting the gate.
3)le**e sth done/adj./
eg:please excuse me if i h**e left any of your questions unanswered.
his illness has left him weak.
i was left with a ray of hope.
使役性动词（causative verb）
/h**e/ let +sb. +do sth./let+down+sb.
+ sb to do/doing sth.
不规则过去分词。
be was/were been
有77个不规则过去分词。
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