regret doing/to do

　　regret to do　對(duì)要做的事遺憾�！�(未做)

　　regret doing　對(duì)做過(guò)的事遺憾、后悔。　(已做)

　　I regret to have to do this, but I have no choice.

　　我很遺憾必須這樣去做，我實(shí)在沒(méi)有辦法。

　　I don't regret telling her what I thought.

　　我不為告訴她我的想法而后悔。

　　典型例題

　　——You were brave enough to raise objections at the meeting.

　　——Well, now I regret ___ that.

　　A. to do　B. to be doing　C.　to have done　D.　having done

　　答案：D.regret having done sth. 對(duì)已發(fā)生的事感到遺憾。regret to do sth. 對(duì)將要做的事感到遺憾。本題為對(duì)已說(shuō)的話感到后悔，因此選D.

　　感官動(dòng)詞 + doing/to do

　　感官動(dòng)詞 see, watch, observe, notice, look at, hear, listen to, smell, taste, feel + do 表示動(dòng)作的完整性，真實(shí)性;+doing 表示動(dòng)作的連續(xù)性，進(jìn)行性

　　I saw him work in the garden yesterday.

　　昨天我看見(jiàn)他在花園里干活了。(強(qiáng)調(diào)"我看見(jiàn)了"這個(gè)事實(shí))

　　I saw him working in the garden yesterday.(強(qiáng)調(diào)"我見(jiàn)他正干活"這個(gè)動(dòng)作)

　　昨天我見(jiàn)他正在花園里干活。

　　典型例題

　　1)They knew her very well. They had seen her ___ up from childhood.

　　A. grow B. grew C. was growing D. to grow

　　答案：A.因題意為，他們看著她長(zhǎng)大，因此強(qiáng)調(diào)的是成長(zhǎng)的過(guò)程，而非正在長(zhǎng)的動(dòng)作，因此用see sb do sth 的句型。

　　2)The missing boy was last seen ___ near the river.

　　A. playing B. to be playingC. playD. to play

　　答案A. 本題強(qiáng)調(diào)其動(dòng)作，正在河邊玩，應(yīng)此用see sb. doing sth句型。