Uned Saith - Adolygu

The numbers 2, 3 and 4 have feminine forms:

Number	Masculine form	Feminine form
2	dau	dwy
3	tri	tair
4	pedwar	pedair

The feminine form is used with feminine nouns;
dwy chwaer                     two sisters
tair chwaer                      three sisters
pedair chwaer                  four sisters

The masculine form is used with masculine nouns:
dau fachgen                     two boys
tri bachgen                       three boys
pedwar bachgen               four boys

un  is followed by a soft mutation in singular feminine nouns
un ferch                         one girl                     
un bachgen                     one boy
un gath                          one cat
un ci                              one dog
un wraig                        one woman
un dyn                           one man

Both dau and dwy are followed by a soft mutation:
Feminine nouns                                                                       Masculine Nouns
dwy ferch              two girls                                              dau fachgen                          two boys
dwy ardd               two gardens                                            dau deulu                               two families
dwy gath               two cats                                                    dau gi                                   two dogs
dwy fam                 two mothers                                         dau dad                                 two fathers

Ble mae’r…?                                                                                Where is the…?

Prepositions often describe the relationship between persons or object.

AR ON	Ble mae’r bwyd? Mae’r bwyd ar y bwrdd	Where is the food? The food is on the table
DROS OVER	Ble mae’r bont ? Mae’r bont dros yr afon	Where is the bridge? It is  over the river
WRTH BY, NEAR	Ble mae’r gath?                  Mae’r gath wrth y tân	Where is the cat? The cat is by the fire
TAN / O DAN UNDER	Ble mae’r  esgid? Mae’r esgid dan y bwrdd	Where is the shoe? The shoe is under the table
GYDA WITH	Ble mae Martha? Mae hi gyda  ffrind	Where is Martha? She is with a friend
YN IN	Ble mae'r oergell? Mae’r oergell yn y gegin.	Where is the fridge? The fridge is in the kitchen
UWCHBEN ABOVE	Ble mae'r ystafell ymolchi? Mae hi uwchben y gegin.	Where is the bathroom? The bathroom is above the kitchen
GYFERBYN Â OPPOSITE	Ble mae'r siop lyfrau?  Mae hi gyferbyn â Debenhams	Where is the book shop?  The book shop is opposite Debenhams
RHWN BETWEEN	Ble mae’r caffi?                  Mae e rhwng y banc a'r llyfrgell	Where is the café? The café is between the bank and the library
AR OCH TO THE SIDE OF	Ble mae’r bin? Mae’r bin ar ochr y tŷ	Where is the bin? The bin is on the side of the house
YN YMY NEAR	Ble mae’r  ffôn? Mae’r ffôn yn ymyl y cyfrifiadur	Where is the phone? The phone is near the computer