A run‐on sentence is two or more independent clauses joined together with insufficient punctuation. This means that there are two or more complete sentences fused into one sentence. Use a colon: a ...

Save guides, add subjects and pick up where you left off with your BBC account. When we write a sentence we always use a capital letter at the start and punctuation at the end (usually a full stop).

A hyphen is used to join two words together that describe a noun. They help us avoid confusion when writing sentences. For example, ‘A crocodile eating brain’. Could mean bad times for Brain.