I found a boy (sit) at the school gate at that time.1.I found a boy (sit) at the school gate at that time.(词性变化)2.I found a boy (sit) at the school gate at that time.(时态填空)两题有区别吗,为什么放在一起问,

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I found a boy (sit) at the school gate at that time.1.I found a boy (sit) at the school gate at that time.(词性变化)2.I found a boy (sit) at the school gate at that time.(时态填空)两题有区别吗,为什么放在一起问,
I found a boy (sit) at the school gate at that time.
1.I found a boy (sit) at the school gate at that time.(词性变化)
2.I found a boy (sit) at the school gate at that time.(时态填空)
两题有区别吗,为什么放在一起问,

I found a boy (sit) at the school gate at that time.1.I found a boy (sit) at the school gate at that time.(词性变化)2.I found a boy (sit) at the school gate at that time.(时态填空)两题有区别吗,为什么放在一起问,
第一个是考 found后面的宾补 所以是词性变化填sitting 因为后面是那时一个时间点所以用现在分词
第二个是考 found后接宾语从句 是句子 所以是时态填空 填is sitting

没有区别。谓语是found ,表明时态是一般过去时,如果没有连词,后面的动词要受动词管辖原则的约束,find的动词模式为find sb doing sth 发现某人正在做某事;find sb do sth 发现某人经常做某事或做某事的全过程。at that time表示在那时,答案一定是sitting.

第一个一般现在时改为过去进行时第一个填词性的变化,第二个填时态