8.11 begin(start) doing/to do
begin / start to do sth
begin / start doing sth.
1) 談及一項(xiàng)長期活動(dòng)或開始一種習(xí)慣時(shí)，使用doing.
How old were you when you first started playing the piano?
你幾歲時(shí)開始彈鋼琴？
2) begin, start用進(jìn)行時(shí)時(shí)，后面動(dòng)詞用不定式to do
I was beginning to get angry。
我開始生起氣來。
3) 在attempt, intend, begin, start 后接know, understand, realize這類動(dòng)詞時(shí)，常用不定式to do。
I begin to understand the truth。
我開始明白真相。
4) 物作主語時(shí)
It began to melt.
8.12 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。
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，他們看著她長大，因此強(qiáng)調(diào)的是成長的過程，而非正在長的動(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。
2012年大學(xué)英語四級語法大全-特殊詞精講6
來源：育路教育網(wǎng)發(fā)布時(shí)間：2011-12-08
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