Question

the first thing we need to do is that we should learn to care about them这句话有语法错误码

Answer 1

答：有逻辑错误，也可以说是有语法错误，因为没人说的话，就是不合语言规律，就是不合语法。
这句话的主要错误就是，你翻译一下就知道了。
我们需要去做的第一件事是。。。。 （一个陈述句，一个事实！）应该是无to不定式作表语：
The first thing we need to do is learn to care about them.
如一定要用表语从句，则前面改成：
Ther first thing we need to remember is that we should learn to care about them.

Answer 2

完美, 没有语法错误.

Answer 3

没有语法错误，不过我觉得 we should learn to care about them这个话应该在learn后面加how

Answer 4

没有

Answer 5

we need to do 是定语从句，并省略了引导词that，is that的that 是表语从句的引导词并且不可以省略。。所以真句话没有语法错误。。。

Answer 6

perfect