She is doing someShe is doing some cleaning.改为过去进行时
问题描述：
She is doing someShe is doing some cleaning.改为过去进行时
答
这个句子时现在进行时，要把现在进行时变成过去进行时，只需要把be动词的时态变成过去时即可。is的过去时为was。故，变化后的句子应为：
She was doing some cleaning.
答
She is doing some cleaning.这句话可以翻译为她现在正在打扫，改为过去进行时只要把be动词is改为was即可。
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答
She was doing some cleaning
答
is 改成was就行
答
She【 was doing】 some cleaning.
答
she was doing some cleaning.
答
She was doing some cleaning.