为了省电费，他每天都记得关灯。

Wèile shěng diànfèi, tā měitiān dōu jìde guān dēng.

In order to save on electricity bills, he remembers to turn off the lights every day.

这个办法太费时间，我们换一个吧。

Zhège bànfǎ tài fèi shíjiān, wǒmen huàn yí gè ba.

This method takes too much time; let’s change to another one.

我们出去吃饭，来回车费我来付。

Wǒmen chūqù chīfàn, láihuí chēfèi wǒ lái fù.

We’re going out to eat; I’ll pay for the round-trip fare.