Conjunctions
Conjunctions are parts of speech which connect words, phrases, clauses or sentences.
Pero/sino - but
Fui al cine ayer pero mi amigo va hoy - I went to the cinema yesterday but my friend is going today.
Sino is used to translate but where there is negative in the first half the sentence, i.e. sino introduces a contradiction,
e.g. No es alto sino bajo - He is not tall but short.
Note also the expression no sólo... sino también - not only... but also
e.g. No sólo me gusta el fútbol sino también el rugby - Not only do I like football but also rugby.
O/u - or
¿Quieres té o café? - Do you want tea or coffee?
O changes to u when it is followed by a word beginning with an o- or an ho-:
¿Quieres un vaso de agua u otro café? - Do you want a glass of water or another coffee?
Y/e - and
Estudiamos matemáticas y ciencias - We study Maths and Science.
Y changes to e when it is followed by a word beginning with an i- or an hi-:
Estudio español e inglés - I study Spanish and English
¿Vas a estudiar geografía e historia? - Are you going to study Geography and History?