The horses are very important to people这样的用法对吗,表达对吗

The able people are unable to walk 对吗 .It is very important to keep healthy.这句话对吗? we are the same 这几种表达对吗? 这样的英语句子表达对吗? 这句话的语法这样表达对吗? Horses are a useful animal.这句话中的冠词a使用的对吗? be important to doing 对吗 Today stars are still important to some people.这里的to是什么用法? 英语翻译Computers are very important to modern life.Many people Computers are very important to modem life.Many people think Important trees people are to very(连词组句) Many trees are cutting down,这样表达对吗