To avoid repeating the same word over and over again in English, we use words like it and them. For example, I likethat shirt. I want it! or Do you likethese shoes? I wantthem!
In Spanish, you can use lo, la, los, or las, depending on the gender and number of the noun.
¿Te gusta este vestido? ¡Lo quiero!
Do you like this dress? I want it!
Me gusta esta camisa y la quiero.
I like this shirt and I want it.
¡Lo quiero!
In English we say I wantit, but in Spanish you’d say yoloquiero. Notice how lo, la, los, and las come before the verb and not after it!