Question 1

How do I form present perfect questions?

Accepted Answer

Put "have" (for I, you, we, they) or "has" (for he, she, it) before the subject, then add the past participle: "Have you finished your homework?" "Has she ever been to London?" For wh- questions, add the question word first: "Where have they gone?" "How long has he worked here?" The key difference from past simple questions is that you use "have/has" instead of "did," and the verb is a past participle (finished, been, gone) rather than a base form. "Did you ever been to London?" is a common error — the correct form is "Have you ever been to London?" because "ever" with life experiences requires present perfect.

Question 2

What is the difference between subject questions and object questions?

Accepted Answer

In a subject question, the wh- word IS the subject — the person or thing doing the action. These questions use statement word order with no helper verb: "Who called you?" (who = the caller, the subject). In an object question, the wh- word is the object — the thing receiving the action. These need a helper verb: "Who did you call?" (you = subject, who = the person called). The simplest test is to answer the question: if the answer replaces "who" at the start, it is a subject question — "Tom called you." If the answer appears after the verb, it is an object question — "You called Tom." This distinction affects every tense and is frequently tested in B2 examinations.

Question 3

How do I form questions in the passive voice?

Accepted Answer

Passive questions follow the pattern: helper verb (was/were, has/have been, will be) + subject + past participle. "Was the letter posted?" asks whether someone posted the letter, without naming who. For present perfect passive: "Has the project been completed?" For future passive: "Will the meeting be cancelled?" For wh- questions, add the question word at the front: "When was the bridge built?" "Where were the documents found?" Passive questions are useful when the doer is unknown or unimportant — the focus stays on the action or result. In Cambridge B2 First, you often need to transform active questions into passive ones, so practising both forms builds important exam skills.

Question Order (Hard) — Present Perfect & Passive Questions

Quick Rule

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Wh- Questions Hub

Question Formation Error Correction

Question Order (Medium)

-ed vs -ing Adjectives

Conditionals

Present Perfect