an adverb indicates how, in what way has happened.the adverb can say something about the verb. the adverb stands after the verb:christian sings beautifully christian zingt mooihe speaks...
if and when can both "as" mean. Yet there is a difference in meaning between these two words. just look:if als, in het geval datwhen als/ wanneer op het moment...
to indicate that something in the past a while was working, use your in English the past tense of the-ing form (past continuous). that looks like this: was/were + verb +-ing.i was watching...