1、enable sb to do sth 使或人能做某事

　　eg：The computer enables people to communicate with each other more conveniently.計算機使人們彼此間能更方便地交流。

　　2、be about to do sth… when 正要做某事……俄然……

　　eg：I was about to go shopping when it suddenly began to rain.我剛要出去買東西，天就俄然下雨了。

　　3、by accident/by chance/accidentally 偶爾地

　　4、come across sb 偶爾遇見

　　5、act on sth 依……行事

　　eg：Each student should act on the rules regulations of the school.每個學生都應該恪守校園的規章制度。

　　6、add to/add up to 加上/總計達

　　eg：The number of the patients added up to three hundred last week.上星期，患者人數達到了三百人。

　　7、in advance/ahead of time 提早

　　8、after all 究竟

　　9、agree to do sth/agree with sb 贊同做某事/贊同或人