Question

have sth done,have sth doing,have sth to do 的区别?

Answer 1

〔透视〕①have sb．／sth．do sth．与have sb．／sth．doing sth．两者都是宾语发出的主动动作。前者指 “使某人／物做某事（指一次性的具体的动作）”；后者指“使某人／物一直处于某种状态”，常接一段时间作状语。②have sth．done这一结构中的宾语与宾补动词是被动关系。③have sth． to do这一结构中的have意为“有”，即“有某事要做”。解题时要注意这四个结构的形式变化，如对宾语提问、被动结构等。

〔精练〕用括号内所给动词的适当形式填空。

6． a computer does only what thinking people have it ＿＿＿＿(do)．

7． who did you have＿＿＿＿(paint) the wall yesterday？

8． i'm sorry i can't help you because i have a lot of letters＿＿＿＿＿(answer)．

9． the villagers are going to have a new bridge ＿＿＿＿＿(build) over the river．

10．who had the candle＿＿＿＿＿＿(burn) throughout the whole night？

11．what have they had＿＿＿＿＿＿(do) to stop the pollution from the chemical works？

Answer 2

第一句是现在完成时，译为“已经做某事”。第二句是现在进行时，译为“正在做某事”。第三句是一般现在时，译为“要去作某事”。