A complex sentence is formed when you join a main clause and a subordinate clause with a subordinating conjunction.
A main clause makes sense on its own. A subordinate clause adds extra information to the main clause and always starts with a subordinating conjunction.
The main clause is in bold. The subordinate clause is in italics. The subordinate conjunction is underlined.
I love roast potatoes although my mum prefers them mashed.
You need to prepare for the spelling test tomorrow if you want to get all your spellings right.
Sometimes, sentences start with a subordinate clause.
Because I knocked on the door, the dog barked.
List of subordinating conjunctions:
Join Miss McHugh on Zoom at 1.30pm for a live Science lesson to complete this work together.
If you can't join, don't worry. Read the information on the powerpoint. Then, sort the vertebrates (animals with a backbone) into the correct group based on their characteristics.
From the information you have read, write a characteristic of each vertebrate group. For example, mammals all have hair or fur.