Teaching aims: Learn how to use the new words
1. differ vi. 相异，不同，意见分歧
Think about how they differ.译：_________________________________________
differ from `````和····不同, differ greatly/widely 相差太大
differ in 在····方面不同 differ with `` on sth. 与···在···上持不同看法
I differ with you on this matter. 关于此事，我和你意见不同。
My answer differs from yours. 我的答案与你的不同。
日语发音和法语大不相同。
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联想：be different from，difference.
2 undertake (undertook, undertaken) It is a difficult task to undertake.
（1）承担（工作，责任等），从事，着手担任
I can undertake the responsibility for the changes.我愿意承接这项变革的责任。
（2）许诺，保证
undertake to do sth. 许诺做某事、同意做某事 undertake that 保证···
翻译：He undertook to finish the job by Friday.
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