A man who never gave up－教学教案

　1.       I’ll be able to write faster.

　　我就能写得更快些。

　　be able to 意思是“能够”，相当于情态动词can，只是can 只有现在式和过去式两种(can. could)，而be able to则有更多的时态形式。例如：

　　Some of us can use the computer now. But we couldn’t do it three years ago.

　　我们中有些人现在能使用计算机，可在三年前我们就不能。

　　The work is so difficult. No one is able to do it.

　　干这活儿很难。没有一个人能干这活儿。

　　I haven’t been able to find the book. How about tomorrow?

　　那本书我还没能找到。明天怎么样？

　　He must be able to use the foreign language, forgetting all about his own.

　　他一定要能做到在使用外语的时候完全忘掉本族语。

　　When will you be able to help me with my Chinese?

　　你什么时间能够帮助我学中文呢？

注意：在表示允许、可能、惊异时用can或could，一般不用be able to。如：

　　You can go now. Right now, all right?

　　你现在可以走了。马上走，好吗？

　　Can (could) 可以用来指比较委婉地提出请求，疑问或看法。而be able to 不能这样用。如：

　— Can I take a message for John?

　— Yes, thank you.

　　我给约翰捎个口信好吗?

　— 好的，谢谢。

　　Could you wait a few days for the money? I’ll return it to you in a few days.

　　这个钱你们等几天行吗？过几天我就还给你。

　　另外，was able 还表示”成功地做到”，相当于managed to do sth/succeeded in doing sth

　2. We can come up with the answer together.

　　我们可以一起发现答案。

　　come up with (an answer)意思为find or produce a way to solve, or an answer “发现， 产生/解决办法或答案”。但是，不能说An idea is come up with。如：

　— He came up with an idea for making kite.

　— How could he come up with this idea?

　— 他想出了做风筝的办法。

　— 他怎么想出这个主意的？

　3.  We just need to keep working on it and not give up.

　　我们需要坚持做下去，不能放弃。

　（1）keep dong sth.意思为“继续做某事”或“不断/反复做某事”。如：

　　Keep reading, and your English will be better and better.

　　坚持阅读，你的英语会越来越好。

　　Keep on doing something也是继续做某事的意思。但是，此时表示在持续的过程中时有间断。如：

　　He is a famous writer. He keeps on writing every day.

　　他是一位著名的作家。他每天都坚持写作。

　　work on sth意思是“从事……工作”如：

　　The writer is working on a new book. The scientist is working o

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