In this exercise you have to change the number of nouns and adjectives, from plural to singular. Make sure you do all the necessary agreements.

*Il y a deux belles fenêtres*, feminine plural must become feminine singular. So, we have to change the number **deux** into **une**, **belles** into **belle** and **fenêtres** into **fenêtre**.

As the general rule to get the plural form is by adding an – **s**, in this case, in order to form the singular form, the – **s** is simply omitted from both the noun and the adjective.

Non, il y a une belle fenêtre.

In this case … *deux nouveaux lecteurs de DVD* are masculine plural. We must change the number **deux** into **un** (masculine singular), **nouveaux** becomes **nouveau**, and **lecteurs de DVD** becomes **lecteur de DVD**.

Adjectives ending in – **eau** form the plural form by adding an – **x**, so in this case the – **x** was simply omitted. The adjective **lecteur** is regular and it forms the plural form by adding an – **s** that was omitted in this case.

Non, il y a un nouveau lecteur de DVD.

*Monsieur Colignon a deux vieux romans* (masculine singular) : in this case you change the number **deux** into **un** and omit the -s in **romans**.

The adjective **vieux** has the same form in singular and plural so no change is needed : 2 vieux romans – 1 vieux roman.

Non, Monsieur Colignon a un vieux roman.

In this case: *deux vieux ordinateurs.*… you have to change the number **deux** into **un**, **vieux** into **vieil** (as the following noun starts with a vowel), and omit the – **s** to **ordinateurs**.

Non, il y a un vieil ordinateur dans la salle de classe.

*Deux nouveaux élèves* becomes *un nouvel élève.* **Nouveaux**, masculine plural becomes **nouveau** in the masculine singular form but **nouvel** before the vowel. **Élèves** becomes **élève**; the – **s** is simply omitted.

Non, il y a un nouvel élève.