英语短语"can't wait to"的核心含义是：迫不及待地要做某事（表达对即将发生的事的强烈期待或兴奋）。
结构：主语 + can't wait to + 动词原形
（"can't"是"cannot"的缩写，"wait"表示"等待"，"to"后接具体要做的动作）
I can't wait to see my grandparents this weekend.
这个周末我迫不及待要见爷爷奶奶了。
She can't wait to start her new job next month.
她迫不及待想下个月开始新工作。
We can't wait to travel to Japan during the holiday.
我们迫不及待想假期去日本旅行。
The kids can't wait to open their Christmas presents.
孩子们迫不及待要拆圣诞礼物。
主语通常是人：因为"迫不及待"是人的情绪，不能用物作主语（如不能说"The movie can't wait to be watched"，应说"I can't wait to watch the movie"）。
后面接不定式：必须用"to + 动词原形"，不能接动名词（× "can't wait to seeing"；√ "can't wait to see"）。
"can't wait for"（后接名词/代词，不接动作）：
I can't wait for the weekend.（我迫不及待等周末。）
"be dying to"（更口语、更强烈）：
He's dying to try the new video game.（他超想试试那个新游戏。）
简单来说，"can't wait to"就是用最直接的方式表达"急着要做某事"的心情，常见于日常对话或书面语中~