On a white bus

On a white bus is a mnemonic device used to commit subordinating conjunctions and relathe English language to memory. Subordinating conjunctions and relative pronouns can start a subordinating clause or a clause that describes a noun. Some letters in this phrase stand for more than one subordinating conjunction.

• O: only if, once
• N: now that
• A: after, although, as, as long as, as much as, as soon as, as though
• W(h): where, wherever, when, whenever, whether, while, which, whether or not, whoever, whereas, why
• H: How, however
• I: in case, if, in order that
• T: though, than, therefore, that
• E: even though, even if
• B: before, because
• U: until, unless
• S: since, so that

Other subordinating conjunctions: provided, provided that, since, so that, rather than