l saw him fly a kite on the playground just now fly 加不加ing
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l saw him fly a kite on the playground just now fly 加不加ing
l saw him fly a kite on the playground just now fly 加不加ing
l saw him fly a kite on the playground just now fly 加不加ing
不加
see sb.do sth.
加ing
不加
不加，因为Just now 是过去时态，表示整个过程都看见，所以要用see sb do
加ing
虽然某些动词如:see, hear, notice, watch.等后接动词-ing 形式或不定式(不带to)作宾语补足语都可以.但意思上有区别.比较:
I saw them playing basketball at 5 p.m. yesterday.(打篮球的动作正在进行,表示部分进行着的动作.)
I saw them play basketball ...
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加ing
虽然某些动词如:see, hear, notice, watch.等后接动词-ing 形式或不定式(不带to)作宾语补足语都可以.但意思上有区别.比较:
I saw them playing basketball at 5 p.m. yesterday.(打篮球的动作正在进行,表示部分进行着的动作.)
I saw them play basketball yesterday. (打篮球的动作已完成,表示全过程的动作.)
练习: 用所给的适当形式填空.
1). We watched them ________ (get) off the bus,__________ (cross) the street and _________ (disappear) among the people.
2). Suddenly we heard someone __________ (cry) for help.
be about to do 是什么意思?
<答>.be about to (do sth.) 表示将来,意为"马上就要"或"正要"例如:
She is about to leave. 她马上就要动身了.
注释:
1). 本结构后通常不能有 immediately, tomorrow, next week 等时间状语.如"我立刻就走"不可说成 I am about to go immediately. (应把immediately 删去)
2). be about to do sth. 可与be about doing sth. 换用
3). be about 之间加just 是美国口语用法.
练习:选择最佳答案填空.
He is about ________.
A. to start this afternoon B. to start C. to starting D. to be starting
答案: get, cross, disappear. crying. B
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