我要下星期一,先知道可否買給你,因為要等待他星期日回應我
1. I need to wait next monday to know if I can buy it to you 'cause also I got to wait until sunday for him to give me a response.
2. Next monday I should know if I can buy it to you 'cause I got to wait until sunday when he will answer me.
3. Next monday I need to know if I can buy it to you 'cause it's necessary to wait until sunday when he gives me a reply.
參考: Hope this can help you. Enjoy of your Day! ^-^