Here are a few examples of full sentences using the French present tense with an -er verb, along with their translations:
Je chante bien. (I sing well.)
Tu parles français. (You speak French.)
Elle aime les pommes. (She likes apples.)
Nous dansons ensemble. (We're dancing together.)
Vous mangez une pizza. (You guys are eating a pizza.)
Ils pensent à leurs vacances. (They're thinking about their vacation.)
Now you can try it. Conjugate the verb in parenthesis for each sentence, according to the subject:
Je _______ allemand. (parler)
Tu _______ les livres. (aimer)
Il ________ avec sa copine. (danser)
Nous ___________ la télé. (regarder)
Vous __________ une chanson de Frank Sinatra. (chanter)
Elles ___________ au foot. (jouer)
Check your sentences against the conjugations in the section above this to see if you did them correctly.