请举个例句说明1.it is commanded that2.command doing

请举个例句说明1.it is commanded that2.command doing 谁能详细解释下fragment,choppy,comma splice,run on以及他们的区别?stylistic problems!如果可以的话,最好有用些例句说明一下. It is necessary to do 的例句 as it is 的意思和例句 comma是什么? comma nd comma splice 和 fused sentences 怎么判断呢 为什么这句话不对呢I like to walk in the park,it is always full of people playing soccer and kickball. It is +adj for to do 的用法和例句 It is +adj+that的从句用法对了还要例句 it is found out是什么意思?另请举两个例句 It is+时间段+since+时间点.可以说一个例句吗？ 模仿例句作答,例句：the dog is clever it's a clever dog1、2、3、 虚拟语气句型“it was (high)time that”请问,虚拟语气的句型“it was (high)time that”和“it is (high)time that”在句子表达的意思上有什么区别?请分别举例句说明,谢谢. it is no good doing sth和it is no use doing 要例句 it is high time to 例句：It is high time to protect the animal 阅读以下例句:It is warm today,but it was warmer yesterday.模仿例句,完成下面的句子.1.It is cool today,but it was________yesterday.2.It is wet today,but it was________yesterday.3.He's late again today,but he was__________yesterday.4.Th 说明方法及例句 说明方法的例句