I'd like to talk to you about a personal matter.

　　我想和你談點私事。

　　Have I picked a bad time to talk to you?

　　我是不是挑了個不恰當?shù)臅r間跟你談話？

　　I made a mental note to talk to her about it.

　　我記著要去和她談談這事兒。

　　It would be better for him to talk to his parents about his problems.

　　他把自己的問題同父母談談會比較好。

　　He found it difficult to talk to members of the opposite sex.

　　他覺得很難與異性交談。