"when different parts of an organism work together in unison, things can be accomplished that could not happen otherwise. " explain this statement

Future simple vous pouvez commencer le travail can we write i like this vous puez commencer le travail

What are the avoir expressions in these questions? !

How do you write i/he/she went to *blank location* in past tense in french? like. how do i say something like i went outside yesterday, or my friend went to the store yesterday? i really want to understand this, but none of the websites i use are really doing a good job at explaining it