I am so confused about hay que
Ok so I tried looking this up and to understand it but without luck. When do you use hay que in talking spanish and in what context and what does it translate into english. many thanks
3 Answers
Here are two lessons:
http://www.studyspanish.com/lessons/tenque.htm
Hay que + infinitive is used to express the idea of "one must do something" or, "it is necessary to do something." It is a more general expression and since there is no subject, the verb form hay is always used.
Hay que tomar un taxi. It is necessary to take a taxi.
Hay que estudiar mucho. One must study a lot.
http://spanish.about.com/od/sentencestructure/a/necessity.htm
Hay Que
Another that is even easier to learn because it doesn't require any conjugation is hay que, again followed by an infinitive:
Hay que ser muy listo. (It is necessary to be very ready.)
¿Por qué hay que usar códigos? (Why is it necessary to use codes?)
And a video if you prefer videos:
https://www.youtube.com/watch?v=ZN_3w5YuL5w


"Hay que" simply means "it is nessary" and is used with an infinitive.
EX. Para tener éxiro en la clase de español, hay que estudiar. (To be successful in Spanish class, it is necessary to study.
Si quieres ir a algún lugar an tu carro, hay que arrancar el motor. ( If you want to go some place in your car it is necessary to start the engine.
One nice thing about 'hay que' is that you do not have to learn any conjugations. It's just 'hay que'.