Written at May 25, 2009 on English with a size of 1,708 bytes.
Presente simple-pasado simple, pasado simple-past perfect, will-would, present continuous-past continuous, past continuous-past perfect continuous, present perfect-past perfect, present perfect continuous-past perfect continuous, past perfect-past perfect, past perfect continuous- past perfect continuous.
Who: personas, which: Animales y cosas, that:lo mismo, whose: posesión, when: expresiones temporales, where: lugar, why: sustantivos cause y reason, how: way y form, what:Lo que.
Condicionales: 1º tipo: if + present simple + will. 2ºtipo: if + pasado simple + would. 3º tipo: if + past perfect + would have participio.
Pasiva: - Presente simple: A: tom writes a letter. P: a letter is written by tom. - Present continuous: A: Tom is writing a letter. P: a letter is being written by tom. - Past simple: A: Tom wrote a letter. P: A letter was written by tom. - Past continuous: A: Tom was writing a letter. P: a letter was being written by - Will: A: Tom will write a letter. P: a letter will be written by tom. - Futuro going to: A: Tom is going to write a letter P: ... is going to be written. - Would: A: Tom would write a letter. P: a letter would be written by - Present perfect: A: Tom has written a letter. P: a letter has been written by... - Present perfect continuous: A: Tom has been writing a letter. P:.... has been beingwritte - Past perfect: A: Tom had written a letter. P: a letter had been written by... - Past perfect continuous: A: Tom had been written a letter. P:... had been beingwritte