His father began to work (as early as) he was seven years old.括号部分可不可以用while或者when

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His father began to work (as early as) he was seven years old.括号部分可不可以用while或者when
His father began to work (as early as) he was seven years old.括号部分可不可以用while或者when

His father began to work (as early as) he was seven years old.括号部分可不可以用while或者when
用when可以,while表“当.的时候”时,要用进行时态.