As seen in this sentence, the passive voice is used to indicate that something is being done to a subject by an agent. It's passive because the subject is being acted upon, rather than acting as in the active voice.
What do buying clothes, talking about art, and shopping for fruits and vegetables have in common? Color! If you want to make sure to buy red tomatoes and critique an artist's use of green, you'll need to know the French colors.
The regular -er French verb manquer means "to miss," which seems straightforward enough, and yet it causes no end of confusion due to a strange turnaround it requires in a certain construction. Don't miss this lesson!
The partitive article refers to an unspecified quantity of food, liquid, or some other uncountable noun. English has no equivalent article - the partitive is usually translated by the adjectives "some" or "any," or may be left out entirely.