Tom和他的姐姐正在擦玻璃用英语怎么说是说Tom is cleaning the window with his sister还是Tom with his sister is cleaning the window?前提条件是必须用with这个词如果是第二句对,为什么不用are

1 Tom and his sister are cleaning the windows
2 Tom is cleaning the windows with his sister
第一句里主语是T和T's sister 所以谓语用的是ARE
第二局里主语是 tom

Tom is cleaning the windows with his sister .

第一个是对的
联系动词主要看它前面的主语来判断单数还是复数,TOM是一个人,所以是单数,用IS

Tom is cleaning the window with his sister
or Tom and his sister are cleaning the window

第一个对
如果是第二个，可以是这样 Tom, with his sister, is cleaning the window
with his sister只是插入语，不算是主语所以用is ,不用are

Tom and his sister are clening the windows.

其实都对,但习惯一般用第一种.
至于第二句为什么不用are, 因为with his sister是一个介词短语,真正的主语是Tom, 所以用is.

人with人 一般看作单数名词!
人and人 才是复数!
第一句对!
第2句只要把他的姐姐说在前面~Tom说在后面!

第一句吧。
with his sister 应该放句末。