The correct answers are: The villain demanded to know where the secret vault was and ordered the agent not to tell anyone else. The villain inquired where the secret vault was and commanded the agent to tell no one else.
When reporting a wh- question, the word order changes from interrogative (verb-subject: "where is the vault") to declarative (subject-verb: "where the vault was"). Options with "where was the secret vault" are incorrect because they retain the inverted question word order.
When reporting a negative command, we use "not to + infinitive" (e.g., "ordered the agent not to tell"). Using "don't tell" in reported speech is grammatically incorrect.
Indirect speech
- Direct: "I am tired." → Indirect: She said she was tired. (present → past)
- Direct: "I will come." → Indirect: He said he would come. (will → would)
- Direct: "I have finished." → Indirect: She said she had finished. (present perfect → past perfect)
- today → that day; here → there; tomorrow → the next day
Indirect speech reports someone's words without quotation marks. The mechanism: backshift tenses one step into the past, shift pronouns, and adjust time/place expressions.
Rule: if the reporting verb is past (said, told, asked), shift the reported tense back one step. If the reporting verb is present (says), no shift needed.
Word order
- ✅ She (S) eats (V) cake (O). — standard SVO
- ❌ Cake eats she. — SOV (not English)
- ✅ a lovely little old rectangular green French silver whittling knife — adjective order (opinion→size→age→shape→colour→origin→material→purpose)
- ✅ Never have I seen… — inversion after negative adverb
English word order = SVO (subject-verb-object) as default. Adjectives follow a fixed sequence (opinion→size→age→shape→colour→origin→material). Adverb placement varies by type. Deviations signal questions, emphasis, or literary style.
Rule: when in doubt, default to SVO. English position = meaning. Move a word and you change the grammar or the emphasis.
Infinitive
- ✅ I want to go. — to-infinitive after want
- ✅ She can swim. — bare infinitive after modal
- ✅ Let me help. — bare infinitive after let
- ❌ I enjoy to read. — wrong (enjoy takes gerund, not infinitive)
The infinitive has two forms: to-infinitive (to go) after verbs like want, decide, plan, hope; bare infinitive (go) after modals and causatives (let, make, help).
Rule: after want, need, decide, plan, hope, expect, agree, refuse → to-infinitive. After can, will, must, let, make → bare infinitive. After enjoy, avoid, finish → gerund, NOT infinitive.
Questions
- ✅ Do you like coffee? — do-support (no existing auxiliary)
- ✅ Can she swim? — inversion (auxiliary before subject)
- ✅ Where does he live? — wh-question
- ✅ You're coming, aren't you? — tag question
Questions require inversion (auxiliary before subject) or do-support (add do/does/did). Types: yes/no (Do you…?), wh- (What/Where/When…?), negative (Don't you…?), tag (…isn't it?).
Rule: find the auxiliary. Move it before the subject. No auxiliary? Add do/does/did. Never use just intonation in written English (You like coffee? is not standard).
Imperative mood
- ✅ Sit down. — command (bare verb, no subject)
- ✅ Don't touch that. — negative imperative
- ✅ Let's go. — first-person inclusive imperative
- ❌ You sit down. — adding you sounds aggressive (only for emphasis/anger)
The imperative mood uses the bare verb form with no stated subject for commands, instructions, requests, and invitations. Negated with don't. Softened with please or replaced by questions (Could you…?) for politeness.
Rule: imperative = base form of verb, no subject, no tense marking. If there's a subject or tense → it's not imperative.
C1 | Advanced
- ✅ Not only did she finish early, but she also helped others. — inversion for emphasis
- ✅ It is the process that matters, not the result. — cleft sentence
- ✅ I insist that he be present. — formal subjunctive
- ✅ Were I to disagree, I would say so. — inverted conditional
These are C1 structures — the CEFR advanced level. At C1 you control inversion, cleft sentences, subjunctive forms, and register-switching fluently across formal and informal contexts.
Marker: if you can restructure a sentence for rhetorical effect without hesitation, you're C1.
Hard
- Had she not intervened, the situation would have escalated. — inverted conditional
- All distractors are grammatically plausible in other contexts
- Multiple rules interact (e.g., tense + aspect + modality)
- Context determines the answer — no single "rule" is enough
Hard marks upper-intermediate to advanced challenges: B2+, interacting rules, edge cases, plausible distractors, and contexts where pattern-matching fails.
Use "Hard" when Easy/Medium feel trivial and you want to test whether you actually understand a rule versus just recognising surface patterns.