To be
Plurals
It is - They are
Months
Say the number
100

Já jsem 

I am 

100

Ball

Balls

100

_______ ________ my book. 

This is my book. 

100

Between January and March

February

100

15

Fifteen

200

Ty jsi

You are

200

Bus

Buses

200

_________  _________ your book.

This is your book. 

200

Between June and August

July

200

57

Fifty seven

300

My Jsme

We are

300

Wish

Wishes

300

_______ ________ our books. 

These are our books. 

300

Between October and December

November

300

167

One hundred and sixty seven

400

On je

He is

400

Shelf

Shelves

400

_________ ________ not my books. 

These are not my books. 

400

Between August and October 

September 

400

7688

Six hundred and eighty eight. 

500

Oni Jsou

They are

500

Baby

Babies

500

_______  _________ my bag off books. 

This is my bag of books. 

500

Between May and July 

June

500

1566

One thousand five hundred and sixty six.