看美剧学英语高频短语：That's it

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That's it: Used to say that something has ended,something is finished or completed; Used to say that something is all that is needed or wanted; Used to say that something is correct; Used in an angry or annoyed way to say that one will not accept any more of something.
As in Okay, that's it. You can go now.

中文释义：that's it在口语中出现频率很高，有多种意思：1、降调 重音在it，表示就这些，就这样；同于that's all。2、升调 重音在it，表示只有这点儿；一般用升调说这句话都是表示不敢相信，觉得太少，太短，不够。3、降调，That’s和it都是重音，表示得了，行了，够了，不想忍受了；用that's it表达这种意思的时候，说话人处于一种失望、烦躁、无奈的情绪中，想尽快结束目前的状态。比如跟人争执不下，不想再吵，想要放弃；或者父母、配偶一直唠叨一件事，听烦了，想让对方停止。4、降调，没有特别的重音，表示做好了、搞定了。