Todo is a Adjetivo indefinido meaning all, every or the whole. It expresses an undefined quantity and is usually followed by a definite article or a possessive adjective.
Look at this table:
Now let's see how to use this adjective!
1. Todo + [definite article/possesive adjective] + [masculine singular noun]
2. Toda + [definite article/possesive adjective] + [feminine singular noun]
3. Todos + [definite article/possesive adjective] + [masculine plural noun]
4. Todas + [definite article/possesive adjective] + [feminine plural noun]
Be careful! There are some time phrases where using todo/toda or todos/as changes the meaning:
- He trabajado todo el día. (I have worked all day/the whole day.)
- He trabajado todos los días. (I have worked every day.)
- Sandra bailó toda la noche. (Sandra danced all night/the whole night.)
- Sandra bailó todas las noches. (Sandra danced every night.)
Todo el mundo = Everyone/Everybody
Todo el mundo vino a mi fiesta.
Everyone came to my party.
Sometimes, we can find todo/toda directly in front of a common noun with no article. This is to add emphasis to the noun. For example:
Extra note about countries and cities
If we want to say "the whole of a country/city" we don't generally use the definite article, although there are some countries that often keep the article, for example:
Todo el Reino Unido (The whole of the United Kingdom)
Toda la India (The whole of India)
Toda la China (The whole of China)
Deciding whether you need to use todo or toda in front of a country is tricky; how do we know the gender of a country?
There is a general rule for countries. If the name of a country ends with a NON-stressed -a, we use "toda":
If it ends in any other letter or a stressed -a, then we use "todo":
For cities, this rule seems to be more flexible, so it is acceptable to use the masculine or the feminine form:
One reason why we may also use the feminine form is because we are talking about "la ciudad de..." and ciudad is a feminine noun so makes us think of the city as a feminine noun.
See also Using todo to say everything or all (of it) (indefinite pronoun).
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