Ich kann Deutsch sprechen.
English: I can speak German.
Modal verbs in German (Modalverben) are special verbs used with another verb to express ability, necessity, or desire. The most common at A1 level are: können (can), müssen (must), and wollen (want).
Use modal verbs in German to talk about what you can do, must do, or want to do. They are used with another verb in its basic form (Infinitiv) at the end of the sentence.
Ich kann Deutsch sprechen.
English: I can speak German.
Du musst heute arbeiten.
English: You must work today.
Wir wollen Pizza essen.
English: We want to eat pizza.
Kannst du mir helfen?
English: Can you help me?
Er muss zur Schule gehen.
English: He must go to school.