Help the restaurant manager complete the incident report about last night's chaotic dinner service by dragging the correct time words into the blanks.
The fire alarm started blaring while the pastry chef was attempting a dangerous flambé trick.
The guests started applauding when the sprinklers suddenly turned on, thinking it was part of the show.
We had to offer everyone free dessert after the fire department finally cleared the building.
The fire alarm started blaring while the pastry chef was attempting a dangerous flambé trick.
We use "while" to introduce a continuous action in progress ("was attempting") that provides the background for another event.
The guests started applauding when the sprinklers suddenly turned on, thinking it was part of the show.
We use "when" for a sudden, punctual event that happens at a specific point in time or interrupts another action.
We had to offer everyone free dessert after the fire department finally cleared the building.
We use "after" to show that an action happens later than another event. The building had to be cleared first before dessert could be served safely!
Conjunction
- ✅ I was tired, but I stayed. — coordinating (links two equal clauses)
- ✅ I stayed because I was needed. — subordinating (introduces dependent clause)
- ✅ Although it rained, we went out. — subordinating (front position)
- ❌ I was tired, because. — incomplete (subordinating conjunction needs a clause after it)
Conjunctions connect words, phrases, or clauses. Coordinating (and, but, or, so, yet, for, nor) join equals; subordinating (because, although, if, when, while) introduce dependent clauses.
Pattern: coordinating = equal partners, same grammatical weight. Subordinating = one clause depends on the other for its meaning.
Clause
- I missed the bus. — ✅ independent clause (stands alone)
- Because I overslept. — ❌ fragment (dependent clause, can't stand alone)
- Because I overslept, I missed the bus. — ✅ dependent + independent = complete sentence
- I missed the bus, and I was late. — ✅ two independent clauses joined by and
A clause is a unit built around a verb with a subject. Independent = can stand alone. Dependent = needs an independent clause to complete it.
Test: does the group of words have a subject + verb AND can it be a sentence on its own? Yes → independent clause. Has a subject + verb but feels incomplete → dependent clause.
Past tense
- I walked home. — simple past (completed action)
- I was walking when it rained. — past progressive (in progress)
- I had already left when she arrived. — past perfect (earlier past)
- I had been waiting for an hour. — past perfect progressive (duration up to a past point)
Four past tense forms: simple past (done), past progressive (was happening), past perfect (had already happened), past perfect progressive (had been happening). Each encodes different timing relative to other past events.
Pattern: simple past = the story's main timeline. Past progressive = background action. Past perfect = flashback to something even earlier.
Progressive tense
- ✅ I am working in London. — temporary, happening now
- ✅ I work in London. — permanent/habitual (simple)
- ❌ I am knowing the answer. — stative verb, can't be progressive
- ✅ She was reading when I arrived. — past progressive (in progress at that moment)
The progressive = be + -ing. Marks actions as ongoing, temporary, or in-progress at a reference time. NOT used with stative verbs (know, believe, own, want, like) unless meaning shifts.
Rule: is the action temporary/in-progress right now? → progressive. Is it a permanent fact, habit, or schedule? → simple. Is it a stative verb? → almost never progressive.
B1 | Intermediate
- ✅ If I had more time, I would travel more. — second conditional
- ✅ The bridge was built in 1920. — passive voice
- ✅ She said she was tired. — reported speech with backshift
- ✅ Although it rained, we enjoyed the trip. — complex sentence with concession
These are B1 patterns — the CEFR intermediate level. At B1 you link ideas, use passive voice, handle reported speech, and manage second conditional — enough for travel, work basics, and everyday independence.
Marker: if you can explain why something happened and follow a news story, you're B1.
Medium
- If I were you, I would apologise. — one rule (second conditional), but distractors like was tempt you
- Answers require active thought, not instant pattern recognition
- Vocabulary and context are realistic, not artificially simplified
- Usually tests one rule, but the wrong answers are plausible
Medium marks middle-difficulty challenges: A2–B1, one rule tested, but with realistic distractors that require genuine understanding.
Use "Medium" when Easy feels too obvious but Hard feels overwhelming. This is where most productive learning happens — the sweet spot of difficulty.