have……do：have sb do sth讓某人做某事
I will have him cut my hair.
have……done：have sth done讓某事被做；還有個(gè)意思是表示主語(yǔ)的壞遭遇；
其實(shí)這個(gè)結(jié)構(gòu)是由have sb do sth變過(guò)來(lái)的：have sth done by sb.
I will have my hair cut by him.
I had my leg broken.
have……doing：have sb/sth doing讓某人/某物一直做……
Don't have the horse running all the way.
以上三個(gè)結(jié)構(gòu)have表示“讓……”,是個(gè)使役動(dòng)詞
have……to do有……要做
I have a lot of work to do.