Saber is used to talk about facts or learned skills. You can use it to talk about information you've memorized or to say you know how to swim, draw, speak a language, etc.
Your friend Miriam has a problem with her computer. She asks you if you think that fixing it is going to be expensive. You say, ''I don't think it will cost too much''. Also, you tell her that your friend Pablo, who is an IT expert, could solve it easily. You say, ''I don't think it's going to be difficult for him''.
If you had this conversation in Spanish, you'd need to use the verb costar (pronounced: kohs-TAHR) in both examples. So costar means 'to cost,' but also 'to be difficult or hard' for someone to do something.
Keep reading to learn about the conjugation of costar in the present subjunctive, as well as its uses in real life contexts.
