simile
metaphor
idiom
100

two or three as tall 

very tall 

100

school is prison 

they don't like school 

100

cold feet  

nervous 

200

He walked as silently as a shadow 

He walked quiet 

200

the world was a white fury 

it is snowing 

200

up in the air 

it has not been decided. 

300

it suddenly felt like a dream 

He couldn't belive it. 

300

it weighs a ton 

it is heavy

300

hit the hay 

go to bed 

400

she was as tall as a mountain 

she was very tall 

400

it is raining cats and dogs 

it is raining 

400

piece of cake 

easy 

500

he was as strong as an ox 

he was very strong 

500

life is a rollercoaster 

life is crazy 

500

cost an arm and a leg 

it is  expencive