have sb doing 使某人做某事,表示事情還在進(jìn)行當(dāng)中
have sb done 使某人做某事,事情也已完成
have sb to do 使某人做某事,表示事情準(zhǔn)備進(jìn)行,
have sb do sth是指讓某人做某事,強(qiáng)調(diào)一次性的動(dòng)作.
have sb doing sth是指讓某人一直做某事,強(qiáng)調(diào)動(dòng)作的持續(xù)性、連續(xù)性或者動(dòng)作的反復(fù)性.
I had Mary clean my bedroom yesterday.
昨天我讓瑪麗打掃了我的臥室.（一次性的動(dòng)作）
He had us laughing during the lunchtime.
他讓我們?cè)谖顼埰陂g一直笑個(gè)不停.（動(dòng)作的連續(xù)性）