Englisch lernen

 present simple: 

Active: 

• We make butter from milk. 
• Somebody cleans these rooms every day. 
• People never invite me to parties. 
• How do they make butter?

Passive: 

• Butter is made from milk. 
• These rooms are cleaned every day. 
• I am never invited to parties. 
• How is butter made?

 past simple: 

Active: 

• Somebody stole my car last week. 
• Somebody stole my keys yesterday. 
• They didn't invite me to the party. 
• When did they build these houses?

Passive:

• My car was stolen last week. 
• My keys were stolen yesterday. 
• I wasn't invited to the party. 
• When were these houses built?