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感官动词 see， watch， observe， notice， look at， hear， listen to， smell， taste， feel + do表示动作的完整性，+doing 表示动作的进行性。例如： I saw him work in the garden yesterday. 昨天我看见他在花园里干活了。（强调我看见了这个事实） I saw him working in the garden yesterday.（强调我见他正干活这个动作）昨天我见他正在花园里干活。 典型例题 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.因题意为，他们看着她长大，因此强调的是成长的过程，而非正在长的动作，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. 本题强调其动作，正在河边玩，应此用see sb. doing sth句型。 | 
