If it is necessary,please write to your parents.改为if条件状语从句前面空两个格,然后逗号再加上please write to your parents哪位知识分子教教我呀!

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Ifitisnecessary,pleasewritetoyourparents.改为if条件状语从句前面空两个格,然后逗号再加上pleasewritetoyourparents哪位知识分子教教我呀!

If it is necessary,please write to your parents.改为if条件状语从句前面空两个格,然后逗号再加上please write to your parents哪位知识分子教教我呀!
If it is necessary,please write to your parents.改为if条件状语从句
前面空两个格,然后逗号再加上please write to your parents
哪位知识分子教教我呀!

If it is necessary,please write to your parents.改为if条件状语从句前面空两个格,然后逗号再加上please write to your parents哪位知识分子教教我呀!
IF necessary,please write to your parents
It's 可省略
it is necessary为主 系 表结构
形容词作形式主语