SEE SOMEBODY DO SEE SOMEBODY DOING After see somebody we can use a bare infinitive if we saw the complete action from beginning to end.
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Tom got into his car and drove away. I saw this.
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I saw Tom get into his car and drive away.
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Ann watched TV. I saw this.
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I saw Ann watches TV.
But after a passive we use full infinitive.
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Ann went out. I saw this.
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I saw Ann go out.
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Ann was seen to go out.
After see somebody we can use gerund in order to show that we saw somebody when he/she was in the middle of
doing something. We didn’t see the complete action.
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I saw Ann. She was waiting for a bus.
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I saw Ann waiting for a bus.
Somebody was doing something.
I saw somebody doing something.
I saw this.
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He was walking along the street. I saw this when I drove past him.
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I saw him walking along street.
Instead of see we can use hear, watch, listen to, feel and notice.
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I didn’t hear you come in.
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I felt somebody touch me.
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I heard it raining.
After smell and find we can only use gerund.
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Can you smell something burning?
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She found him reading her letters.
