it’s和that’s的区别

That's it.那就这样吧.就到这.那就这么着吧.【商量语气,多为结束语】
That’s it!没错!是的!对啦!就是这样!
That's it.对了.
【That is it:就是这样、这就是了 】
Student:That is it sir.The link between man &God is FAITH.That is all that keeps things moving &alive.
学生：先生,【这就是了,就是这个了】.人和上帝之间的连接就是信心.这就是让所有事物持续并有活力的原因.
Along the strand,there are too few shorebirds:some solitary sandpipers,least timid of the waders,but 【that is it】.
海岸边的滨鸟很少,只有一些孤独的鹬和胆小的水禽,但事实【确实是这样】.
That's that!就是这样!/再没什么可说的了./让它去吧.【口气较武断,就这么着了、不必再说了】
That's that.就这样而已
例句：
The documents are far more complicated than normal commercial deal,where money changed hands and that is that.
这些文件比任何正常商业交易要复杂得多,后者只是钱一转手【就完事了】.
You'll have to finish it within two days,and 【that's that】.
你们必须在两天内完工,【就这样】.
1.It's…that...:强调句型:意思是：“正是.”.例如：It is the English teacher that helped me with my homework.“正是这个英语老师帮助我做的家庭作业”.
2.There's……that...:“在...（地方）有.”.that 引导定语从句修饰 There's 后面的词.例如：On my bookshelf,there's a dictionary that I bought ten years ago.书架上有一本我十年前买的字典.