call on sb. 拜访
　　We thought we should call on our teacher on the way home.

call at sth. 逗留
　　I called at the drycleaner’s to collect your suit.
　　我去了干洗店取你的衣服。

call sth. off 取消
　　The game was called off on account of rain.
　　由于下雨，这场比赛取消了。

call out 大声叫,请去
　　He immediately called out for help. 他立即大声呼救。
　　Doctors are often called out in the middle of the night.

call up 给……打电话, 征召（入伍）
　　I’ll call you up about seven o’clock.
　　He was called up right at the beginning of the war.

call for 叫或接（某人）， 要求
　　I’ll call for you at your house at nine.
　　This problem calls for careful thought.

call in 找来，收回
　　Call in a doctor at once.
　　The librarian has called in all the books.