Trying to do和try to do 有什么区别?

Trying to do和try to do 有什么区别? try to do 和try doing It's good for you to keep_____when something difficult needs___.A trying;to do B trying;doingC to try;to doD to try;to be done be trying to do be trying to do what are you trying to..还是what do u try to? do you try to tell me that you believe him?和are you trying to tell you that you believe him?哪个对为什么？ Do you consider it any good__again?A To try C trying 哪个正确? Don't give up,_____ to do it again.填try 还是 trying attempt to do 和try to do 的区别 try to do my try to do try to do sth try to do try to do sth Try to do it. try to do & try doing的用法和区别? 怎样区别 try to do 和 try doing