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，+doing 表示動(dòng)作的進(jìn)行性。例如：
I saw him work in the garden yesterday. 昨天我看見他在花園里干活了。（強(qiáng)調(diào)"我看見了"這個(gè)事實(shí)）
I saw him working in the garden yesterday.（強(qiáng)調(diào)"我見他正干活"這個(gè)動(dòng)作）昨天我見他正在花園里干活。