问题
选择题
I was deep in thought, so I didn't notice _____.
A．him to come in
B．him come in
C．he come in
D．him coming in
答案
答案：D
notice sb. doing更强调当时看见某人正在进行的动作。
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I was deep in thought, so I didn't notice _____.
A．him to come in
B．him come in
C．he come in
D．him coming in
答案：D
notice sb. doing更强调当时看见某人正在进行的动作。
