IELTS Vocabulary - Idioms related to memory

VOCABULARY	DEFINITION	EXAMPLE
TIP OF MY TONGUE	if a word is on the tip of your tongue, you want to say it but cannot remember it.	One of the characters in the book, his name was, wait a second, it's on the tip of my tongue.
BACK OF MY MIND	you intend to do it, but are not actively thinking about it	There are quite a few things that are in the back of my mind to do but recently I have just been focusing on studying for the IELTS exam.
PHOTOGRAPHIC MEMORY	you are able to remember things in exact detail	I know a couple of people who have a photographic memory and sometimes I wish I had the same as I am very forgetful.
JOG MY MEMORY	cause someone to remember something suddenly	I usually look at photographs of when I was at school to help me jog my memory of certain people and events.
If memory serves me right	to remember correctly	If my memory serves me right the name of the book is Brave New World, if you haven't read it then I highly recommend it.