Translate the phrases. do not abbreviate "usted" or "ustedes." we (masculine) give them (dar) she gives us (dar) they (masculine) give us (dar) they (feminine) give her (dar) you-all (formal) give me (dar) sara buys me (comprar) they (masculine) buy you (familiar) (comprar) we (masculine) tell them (decir) susana writes to them (escribir) we (masculine) bring to you (familiar) (traer) suggested writing exercise: write ten sentences using in each an indirect object pronoun.

The order of these sentences is as follows: 
1. No (if applicable) 
2. the indirect object pronoun. This refers to the person or thing that the action is being done to or for. In the sentence "I kick him," the word him would be replaced by an indircet object pronoun because the action is being done to him. The indirect object pronouns are me (to me), te (to you when using the tú form), les (to him, to her, to you (usted)), nos (to us), os (to you all (vosotros)), se (to them, to all of you (ustedes)). 

3. The conjugated verb. Conjugate for the subject who is preforming the action or inaction. 

Now for your questions. Please note that I am conjugating the verb in the present tense. If the sentences are meant to be translated in any other tense (futuro, imperfecto or pretérito), change the conjugation of the verb into the appropriate tense: 
1. No les damos. 
The no comes from the word "don't." les comes from the word them. The conjugation of dar comes from the word we (which indicates the nosotros form). 
2. No nos dan. 
No comes from "don't". nos comes from the word "us". the conjugation of dar comes from "they." 
3. No le dan. 
No comes from "don't." le comes from "her." the conjugation of dar comes from "they." 
4. No me dan. 
No comes from "don't." Me comes from "me". the conjugation of dar comes from "you all (formal)," also known as usted. 
5. No me compra. 
No comes from "doesn't." me comes from "me." the conjugation of comprar comes from "Sara." 
6. No les escribe. 
No comes from "doesn't." les comes from "them." the conjugation of comprar comes from "Susana." hoped this helped

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