第 70 课: 更多的动词；疑问代词：谁，哪；副词：平时-1

The swan is flapping its wings. 这只天鹅在拍打翅膀

These birds have spread their wings. 这两只鸟都张着翅膀

The bird on the man's hands has its wings spread. 这个男人手上的那只鸟张着翅膀

This bird does not have its wings spread. 这只鸟没有张着翅膀

Camels have four legs. 骆驼有四条腿

People have two legs. 人有两条腿

Ducks have two legs. 鸭子有两条腿

Elephants have four legs. 象有四条腿