Mother was angry yesterday.she couldn't say a word .合并为一句怎样合成一句?

Mother was so angry that she coulden't say a word yesterday .

如果是要整合两句话的意思而不光指字面上的合并，那我建议：
Mother was so angry yesterday that she was/became speechless. (speechless 前置 was 或 became 都可）
这样表达层次稍高，没学过这单词就算啦。

Mother was too angry to say a word yesterday.
mother was so angry that she could not say a word yesterday.
涉及到词组too...to....
so/such....that...
希望有帮助，共同提高
：）

mother was angry yesterday and she couldn't say a word.
希望可以对你有所帮助, 谢谢。

Mother was so angry yesterday that she couldn't say a word.

Mother was too angry to say a word yesterday.

so angry mother was yesterday that she couldn't say a word.