a 我只需上网大约半个小时。

　　b the same for me. i need to check my e-mails and send some.

　　b 我也是。我需要看一下我的电子邮件以及发送几封电子邮件。

　　a how much does it cost to use the internet

　　a 上网需要多少钱？

　　b it should be quite cheap. it usually depends on the time ╟ how long you are online.

　　b 应该很便宜。通常依时间而定——你上网的时间。

　　a well, let’s ask how much it costs. half an hour is enough for me.

　　a 哦，咱们问问需要多少钱。半小时对我足够了。

　　b yes, 30 minutes is fine for me too.

　　b 是的，30分钟对我也够了。

　　notes 注释

　　1 remember depend on / depend on, e.g. the cost depends on the time / the cost depends on the time.

　　记住depend on /取决于。例如the cost depends on the time /费用取决于时间的长短。

　　2 if you want to ask the cost of something, very often you use the phrase or question how much . . . / how much . . . e.g.: how much does it cost to use the internet / how much does it cost to use the internet

　　如果你想问某事的费用，通常可以问这个短语或者问句how much . . . / . . .多少钱例如：how much does it cost to use the internet /上网需要多少钱？

　　3 remember enough / enough: half an hour is enough time for me / half an hour is enough time for me; i’m not hungry ╟ i’ve eaten enough / i’m not hungry ╟ i’ve eaten enough.

　　记住enough /足够的：half an hour is enough time for me / 半小时对我足够了；i’m not hungry ╟ i’ve eaten enough /我不饿——我已经吃饱了。