The 每当…时 structure
“Whenever...”
The 每当…时 
structure emphasizes that an action happens every time a circumstance arises.
structure emphasizes that an action happens every time a circumstance arises.Scheme
每当
(subject)
predicate 1
时
subject
predicate 2
Pay attention
If there is one subject, it is placed in the second part of a sentence.
If there are two subjects, the first one is placed after 每当 and the second one is placed in the second part of a sentence.
Examples
每当有工作要做时，他就溜走
Whenever there’s a job to do, he slips away
měidāng yǒu gōngzuò yào zuò shí, tā jiù liū zǒu
每当我们遇到困难时， 他们总来帮助我们
Whenever we’re in trouble, they are always there to help
měidāng wǒmen yùdào kùnnan shí, tāmen zǒng lái bāngzhù wǒmen
每当我生病时一切都乱了套了
Every time I get sick, everything gets messed up
mĕidāng wŏ shēngbìng shí yíqiè dōu luànletào le
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