1·They commenced a systematic search.
他们开始了系统的搜查。
—— 《柯林斯英汉双解大词典》
2·She commenced studying chemistry.
她开始学习化学。
3·Not many,' answered Linton; `but he goes on to the moors frequently, since the shooting season commenced; and you might spend an hour or two with me in his absence.
“没有好多天，”林惇回答，“可是自从猎季开始，他常常到旷野去；当他不在的时候你可以陪我一两个钟头，答应我你一定要来。
4·Organizations around the world have already commenced planning fo r their IWD Centenary celebrations.
世界各地有关组织已经开始为国际妇女节百年华诞张罗庆典。
5·I unknotted the handkerchief, and commenced dropping them in from an angle, and the flame curled up the chimney.
我解开手绢，开始把它们从手绢角里向外倒，火焰卷上了烟囱。