3 连词+分词（短语）
有时为使分词短语与主句关系更清楚，可在分词前加连词。 连词有： when，while，if though，after, before, as. 但分词的主语和主句的主语必须为同一个，如：
While waiting there, he saw two pretty girls come out of the building.
waiting 和saw 的主语相同。
国际英语资讯:Spotlight: Worst mass shooting reignites gun control debate among Americans
国内英语资讯:China, EEU complete negotiations on economic, trade cooperation agreement
国际英语资讯:Ukrainian president, Australian parliament leader discuss cooperation on MH17 investigation
国内英语资讯:Chinese president congratulates Canadas new governor general Julie Payette
川普总统周二前往波多黎各视察灾情
揭秘各国兵哥哥的野战口粮！看到韩国的，忍不住笑出了声
体坛英语资讯：O.J. Simpson released on parole after nine years in prison
不要在假期想工作，那只会适得其反
国际英语资讯:Interview: Pacific Alliance tackles non-tariff trade barriers
体坛英语资讯：Bayern held, Freiburg win in German Bundesliga
国际英语资讯:Kenyas electoral contenders hold crucial talks ahead of repeat vote
国内英语资讯:Chinese investors eyeing Mexicos SEZs, say Mexican officials
国内英语资讯:China leads global quantum communication development
朝核挑衅白热化 美国务卿访华
国际英语资讯:Moscow warns of retaliation if U.S. continues pressure on Russian media
体坛英语资讯：Chinas Zhang Shuai advance to face Radwanska in China Open
国内英语资讯:China archeological team joins Kenya excavation
国际英语资讯:Iraqs Kurdish region forms new council to run ties with Baghdad
体坛英语资讯：Marseille come from behind to win derby against Nice, Lyon finish another six-goal draw in L
英语美文：有一种贫穷，叫做短视
拉斯维加斯民众排长队为枪击受害者献血
万万没想到！七个让你惊呼“厉害了”的冷知识
体坛英语资讯：Chinese sportswear giant ANTA become official partner of Beijing 2022 Winter Olympics
国内英语资讯:Chinas National Day holiday starts with rising tourism revenue
国际英语资讯:Bumpy road ahead for NAFTA talks, warn Mexican lawmakers
国际英语资讯:Mexican Senators call on U.S. Congress to pass gun control legislation
国际英语资讯:Iran says regional conflicts need political solutions
听说日本要收“单身税”？为什么受伤的总是单身狗？
国际英语资讯:Egypts FM: no military solution to Yemeni crisis
体坛英语资讯：Peru coach Gareca says team wont man-mark Messi