To show who is doing the action and when the action is taking place, the verb needs to be conjugated. This means changing the verb into a different form. In Spanish, it isn't usually necessary to ...

The TE-form verbs are the conjugated form of verbs that end with TE or DE. For example, when you want to ask others to memorize something, you say the TE-form of the verb, OBOEMASU (to memorize ...