试题题干
Translate the following sentence into Chinese.
Animals can learn to do many things that, while not necessarily useful, are very amusing to watch.
参考答案
试题解析
考点：learn to do many things学会做许多事情；necessarily useful一定有用的；amusing to watch具有观赏性。
句子结构：主句为Animals can learn to do many things，that···为定语从句修饰things。