每当

měi dāng wǒ men yù dào kùn nan shí tā men zǒng shì lái bāng zhù wǒ men

每当我们遇到困难时，他们总是来帮助我们。

Whenever we met with difficulties, they came to help us.

měi dāng yǒu rén yuàn yì tīng tā jiǎng shí tā dōu yào shuō míng tā bù xǐ huan zhè ge fāng àn

每当有人愿意听她讲时，她都要说明她不喜欢这个方案。

Whenever someone is willing to listen to her, she makes it clear that she doesn't like the plan.

měi dāng kǎo shì lái lín shí jié kè dōu huì biàn chéng yè māo zi

每当考试来临时，杰克都会变成夜猫子。

Jack becomes a night owl every time the examination is coming.