What 就会 means and what context in sentences

In fact, 【就会】 is usually used with 【一】,The sentence structure is：（S+ 【一】V1/A.+ 【就/就会】V2/A ）【一】……【就/就会】means：【When there is a condition, there must be a result. The former action【V1/A】 is the condition and cause, and the latter action【V2】 is the result。e.g:我【一】看见（v1）冰淇淋，我就想吃（v2)。（= I want to eat ice cream as soon as I see it）；他【⼀】回来（v1)，就【给我打了】（v2）个电话。（he made a phone call to me as soon as he came back）.

“就会”使用时，一般前面会搭配“一......”，形成“一......就会......”的句式，例句1：我一吃香蕉，就（会）闹肚子。此处“会”可以省略。例句2：我一上数学课，就（会）犯困。

供参考！