1. Mutter, du besuchst uns nächstes Jahr. (besuchen)
When speaking to one person with whom one is intimate, use "du." The verb ending for "du" is "-st."

2. Mutter und Vater, ihr besucht uns nächstes Jahr. (besuchen)
When speaking to more than one person with whom one is intimate, use "ihr." The verb ending for "ihr" is "-t."

3. Herr und Frau Schwarz, Sie besuchen uns nächstes Jahr. (besuchen)
When speaking to one or more persons with whom one is not intimate, use "Sie." The verb ending for "Sie" is "-en."

4. Mutter, spielst du gern Karten? (spielen)
When speaking to one person with whom one is intimate, use "du." The verb ending for "du" is "-st."
When asking a yes-or-no question, put the verb in the first position in the sentence.

5. Mutter und Vater, spielt ihr gern Karten? (spielen)
When speaking to more than one person with whom one is intimate, use "ihr." The verb ending for "ihr" is "-t."
When asking a yes-or-no question, put the verb in the first position in the sentence.

6. Herr Schwarz, spielen Sie gern Karten? (spielen)
When speaking to one or more persons with whom one is not intimate, use "Sie." The verb ending for "Sie" is "-en."
When asking a yes-or-no question, put the verb in the first position in the sentence.

7. Vater, du arbeitest zuviel. (arbeiten)
When speaking to one person with whom one is intimate, use "du." The verb ending for "du" is "-st."
When the verb stem ends in "-t" or "-d," add an "-e-" between the stem and the "-st" or "-t" ending so the ending is pronounceable and audible.

8. Meine Freunde, ihr arbeitet zuviel. (arbeiten)
When speaking to more than one person with whom one is intimate, use "ihr." The verb ending for "ihr" is "-t."
When the verb stem ends in "-t" or "-d," add an "-e-" between the stem and the "-st" or "-t" ending so the ending is pronounceable and audible.

9. Meine Damen und Herren, Sie arbeiten zuviel. (arbeiten)
When speaking to one or more persons with whom one is not intimate, use "Sie." The verb ending for "Sie" is "-en."

10. Willi, kommst du aus Deutschland oder aus Österreich? (kommen)
When speaking to one person with whom one is intimate, use "du." The verb ending for "du" is "-st."
When asking a yes-or-no question, put the verb in the first position in the sentence.

11. Willi und Alberta, kommt ihr aus Deutschland? (kommen)
When speaking to more than one person with whom one is intimate, use "ihr." The verb ending for "ihr" is "-t."
When asking a yes-or-no question, put the verb in the first position in the sentence.

12. Frau Zimmermann, kommen Sie aus Deutschland? (kommen)
When speaking to one or more persons with whom one is not intimate, use "Sie." The verb ending for "Sie" is "-en."
When asking a yes-or-no question, put the verb in the first position in the sentence.

13. Frau Zimmermann, warum warten Sie hier? (warten)
When speaking to one or more persons with whom one is not intimate, use "Sie." The verb ending for "Sie" is "-en."
In a question for information, the verb is in second position, following the interrogatory word like "warum," "why."

14. Maxim, warum wartest du hier? (warten)
When speaking to one person with whom one is intimate, use "du." The verb ending for "du" is "-st."
When the verb stem ends in "-t" or "-d," add an "-e-" between the stem and the "-st" or "-t" ending so the ending is pronounceable and audible.
In a question for information, the verb is in second position, following the interrogatory word like "warum," "why."

15. Maxim und Gerda, warum wartet ihr hier? (warten)
When speaking to more than one person with whom one is intimate, use "ihr." The verb ending for "ihr" is "-t."
When the verb stem ends in "-t" or "-d," add an "-e-" between the stem and the "-st" or "-t" ending so the ending is pronounceable and audible.
In a question for information, the verb is in second position, following the interrogatory word like "warum," "why."

16. Maxim und Gerda, ihr wandert gern, nicht wahr?* (wandern)
When speaking to more than one person with whom one is intimate, use "ihr." The verb ending for "ihr" is "-t."
This question is actually a statement with a "right?" or "isn't that so?" added to the end, so it has normal word order, with the verb in second position.

17. Herr und Frau Zimmermann, Sie wandern gern, nicht wahr?* (wandern)
When speaking to one or more persons with whom one is not intimate, use "Sie." The verb ending for "Sie" is "-en."
This question is actually a statement with a "right?" or "isn't that so?" added to the end, so it has normal word order, with the verb in second position.

18. Gerda, du wanderst gern, nicht wahr? (wandern)*
When speaking to one person with whom one is intimate, use "du." The verb ending for "du" is "-st."
This question is actually a statement with a "right?" or "isn't that so?" added to the end, so it has normal word order, with the verb in second position.

19. Karen, du tanzt sehr gut. (tanzen)
When speaking to one person with whom one is intimate, use "du." The verb ending for "du" is "-st."
With verbs whose stems end in -z, -s, -ß, or -chs (tanzen, reisen, heißen, wachsen), the "s" of the "-st" ending "collapses" into the stem, so the ending appears to be only "-t."

20. Frau Klein, Sie tanzen sehr gut. (tanzen)
When speaking to one or more persons with whom one is not intimate, use "Sie." The verb ending for "Sie" is "-en."

21. Fritz und Gretchen, ihr tanzt sehr gut. (tanzen)
When speaking to more than one person with whom one is intimate, use "ihr." The verb ending for "ihr" is "-t."