Me mostre frases de exemplo com can any one show me examples using reflexive verbs like lavo me, lava se, lava te. in some sentences me , te se comes before the verb like nunca me lavo. how to to know when to use such sentence formations .Me diga o maior numero de expressões diárias possíveis.

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in latin languages (like portuguese, spanish, italian, romanian, french), the most common is putting the reflexive pronoun before the verb:
Eu te amo. (portuguese)
Yo te amo. (spanish)
Je t'aime. (french)
Io ti amo. (italian)
Eu te iubesc. (romanian)
(I love you in english)

But in portuguese you can write it after the verb too. There is not difference but it sounds more formal in Brazil. Perhaps this is why it's more common in Portugal than in Brazil.
Eu amo-te. (I love you)
Ele matou-a. (He killed her)
Ela ensina-nos. (She teaches us)

in some cases we also can put the pronoun inside the verb.
Matá-te-ei. (I will kill you)
Beijá-lo-ia. (I would kiss him)
but it is not common in informal conversations. We use it only in formal language.

So, if u want to use the reflexive pronoun before or after the verb, the meaning will not change. But after the verb, you will look more formal.
Eu te levo para casa.
Eu levo-te para casa.
I take/drive you home.

Ele se irrita facilmente.
Ele irrita-se facilmente.
He gets angry easily.

Nós nos sentamos sobre a mesa.
Nós sentamo-nos sobre a mesa.
We sit (down) over the table.

I hope you understand me.