1. 他又一次违背了诺言。

[ tā yòu yī cì wéi bēi le nuò yán 。 ]

He broke his words once again.

2. 他过去总是死记硬背。

[ tā guò qù zǒng shì sǐ jì yìng bēi 。 ]

He used to learn everything by rote.

3. 你应该把这些词背熟。

[ nǐ yīng gāi bǎ zhè xiē cí bēi shú 。 ]

You should learn these words by heart.

4. 据说他背地里和两个女人有关系！

[ jù shuō tā bēi dì lǐ hé liǎng gè nǚ rén yǒu guān xì ！ ]

It is said he has secret love affairs with two women!