在英语中，“不能吃很多糖”可以用以下几种表达方式来表示：

"Can't have too much sugar"
"Can't eat a lot of sugar"
"Need to pmit sugar intake"

这些表达方式的来源都是由“sugar”这个单词和否定词“not”或“can't”以及相关的动词和介词组合而成。

下面是一些英文例句及其中文翻译：

"I can't have too much sugar because it's not good for my health."
(我不能吃太多糖，因为对我的健康不好。)
"I need to pmit my sugar intake because I have diabetes."
(我需要限制我的糖摄入量，因为我有糖尿病。)
"I can't eat a lot of sugar because it makes me feel sick."
(我不能吃很多糖，因为吃了会觉得不舒服。)