公司已经宣布将这次事故。

　　②She undertook responsibility for the changes.

　　她做出这些改变的责任。

　　③He undertookto finish the job by Friday.

　　他这一工作。【自主归纳】undertake a task

　　undertake an attack

　　undertake to do sth.

　　undertake that ...

　　undertook the responsibility of doing sth.

　　【即时巩固】

　　①—John, would you lend me some money?

　　—Unless you ________ to pay the money back within six months.

　　A. understand

　　B. undertake

　　C. underplay

　　D. underline

　　②________ the situation, Charles Yerkes undertook _______ the system in 1902 by obtaining ownership of many different lines.

　　A. Seeing, improving

　　B. Seen , improved

　　C. To see, to improve

　　D. Having seen, to improve

　　考点-4. enlarge

　　【教材原句】After World War Ⅱ ended in 1945，more people travelled on the undergroundso the system was enlarged and more lines were added including the Victoria Line，which was linked with other lines at almost every station.()1945年第二次世界大战结束后，更多的人乘坐地铁，于是又增建了更多的地铁线路，其中包括维多利亚线，它所有的站几乎都和其他线相连。

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