from加国籍还是国家名,These children are from（ ）,so theycan spesk （）quite well

These children are from China,so they can speak Chinese quite well.
These children are from Japan,so they can speak Japanese quite well
These children are from England,so they can speak English quite well

China；Chinese。

from后加的是国家名,比如来自中国,from China,而第二个空,speak后面加语言,也就是China的形容词：中国的,中国人的,中国人,汉语,都是Chinese

England English