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 playing　　C. play　　D. 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。