gonna 就是 going to. 将要 Eg: I'm going to visit my grandmother tonight.= I'm gonna visit my grandmother tonight. 一般都表达为 someone‘s gonna do something (此处的someone‘s 是指someone is) gotta 就是 got to/have got to 必须要 Eg: I’ve got to clean my room.=I've gotta clean my room. 一般表达为someone's gotta do something (此处的someone’s是指someone has ) wanna 就是 want to 想要 Eg: I want to go home.= I wanna go home. 一般表达为someone wanna do something 口语得表达,