Necesito unas tijeras y una regla para cortar el papel bien.

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Breakdown of Necesito unas tijeras y una regla para cortar el papel bien.

• una: a
• para: to
• y: and

Questions & Answers about Necesito unas tijeras y una regla para cortar el papel bien.

Why is it unas tijeras and not una tijera?

In Spanish, tijeras is normally used in the plural, just like scissors in English. So Spanish says unas tijeras for a pair of scissors.

Even though English often uses a pair of..., Spanish usually just uses the plural noun with a plural article:

• unas tijeras = a pair of scissors / some scissors

You may sometimes hear una tijera in certain contexts or regions to mean one blade or one cutting tool, but for ordinary scissors, unas tijeras is the standard choice.

Why does the sentence use unas with tijeras, but una with regla?

Because the nouns have different grammatical number:

• tijeras is plural, so it takes unas
• regla is singular, so it takes una

So:

• unas tijeras = a pair of scissors / some scissors
• una regla = a ruler

This is just normal article agreement in Spanish: the article must match the noun in gender and number.

Why is there no yo before necesito?