问题补充：
There are thousand of languages in the world. 这英文句子哪里有错
答案：
There are thousands of languages in the world.
thousands of 固定搭配,译作 成千上万
======以下答案可供参考======
供参考答案1:
句中的thousand 应该为thousands.
There are thousands of languages in the world.
hundred百,thousand千等表示数量时，如果是具体的数字表示几百，几千时，直接用
基数词＋hundred/thousand,不加s; 如果表示概数，数以百计的，数以千计的，则要用
hundreds of,thousands of
