1.
To persuade to have sexual intercourse.
性交说服…发生性关系
2.
An act of sexual intercourse.
性交发生性关系的行为
3.
They often had sex together.
他们常发生性关系.
4.
I don't want to go the limit.
我不想发生性关系。
5.
To have sexual relations with.
共枕与…发生性关系。
6.
have sex with sb,esp sb to whom one is not married
与某人发生性关系（尤指并非配偶）.
7.
Marry sb after having had a sexual relationship with her
与某女人发生性关系後娶其为妻
8.
Don't sleep with him on the first date.
别在初次约会时就跟男人发生性关系。
9.
To accept payment in exchange for sexual relations.
卖淫以发生性关系而获得报酬
10.
Have sex with sb, esp sb to whom one is not married
与某人发生性关系（尤指并非配偶）
11.
To consent to engage(oneself) in sexual intercourse with a man.
委身于同意（自己）与一男子发生性关系
12.
Have you had her yet?
你跟她发生过性关系吗?
13.
she went all the way with him.
她和他发生过性关系。
14.
Teacher-Student Relationship-Affective Basis Of Students’Creative Development;
师生关系:学生创造性发展的情感基础
15.
He got off with his girl friend before marriage
他在婚前就与女友发生过性关系。
16.
She was having it off with a neighbour while her husband was away on business.
她在丈夫出差时跟邻居发生了性关系.
17.
He did it with the girl.
他和那姑娘发生了性关系。
18.
We ended up having sex on his chair.
我们终究在他的椅子上发生了性关系。