楼上的不对。
1.These are many nice butterflies.可以借鉴。
而且many 也可以省去。
但是第二个,不可以这么说,而应该是Can your sister dance well?
回答是No , she cannot (或者can't)
第三个是What's that?
不好意思 饿滴英语不太好!!!-.-
你的句子呢= =~?
1.These are many nice butterflies.
2Does your sister can dance well?
3.What's that?