Subject Questions and Questions with Prepositions: How They Work in English 🔍

Most questions ask about the object of an action. But sometimes we ask about the subject - who or what performed the action. These work differently, and preposition questions have their own rules too. 🎯

1. Object questions vs subject questions 📋

Type	Question	How it works
Object question	Who did Maria call? (Maria called someone)	Who + did + subject + verb: normal order with auxiliary
Subject question	Who called Maria? (someone called Maria)	Who + verb: no auxiliary, same order as a statement

In a subject question, the question word IS the subject. So we use no auxiliary (no do/does/did) and the verb stays in its normal form:

• Who teaches you English? ✅ (not: Who does teach you?)
• What happened next? ✅ (not: What did happen next?)
• Who won the match? ✅ (not: Who did win the match?)
• What caused the problem? ✅ (not: What did cause the problem?)

2. How to tell the difference 🤔

Ask yourself: is the question word the subject or the object?

• "Who did you invite?" → You invited someone. Who = object. Use did. ✅
• "Who invited you?" → Someone invited you. Who = subject. No did. ✅
• "What did she buy?" → She bought something. What = object. Use did. ✅
• "What surprised her?" → Something surprised her. What = subject. No did. ✅

3. Questions with prepositions 📌

In English, prepositions go at the end of questions, not the beginning:

✅ Natural English	❌ Wrong
Who are you talking to?	To who are you talking?
What are you looking for?	What are you looking? (preposition missing)
Who did you go with?	With who did you go?
What does this word refer to?	To what does this word refer?

4. Common preposition questions ⚠️

• Who are you waiting for? ✅
• What are you thinking about? ✅
• Who does she work for? ✅
• What did you pay for it? ✅
• Who does this bag belong to? ✅

Ask smarter questions - and you will get better answers! 🚀