Turn off is a phrasal verb meaning "cause to stop operating". The particle off can be used before or after the object of the verb.
Phrasal verb
Phrasal verb vs verb + preposition: a phrasal verb has a non-literal combined meaning (run into = meet by chance). A verb + preposition keeps its literal meaning (run into the room = physically run inside). The test: is the meaning predictable from the parts? No → phrasal verb. Yes → just a verb followed by a preposition.
Phrasal verbs combine verbs with particles/prepositions to create new meanings. They're the single biggest gap between textbook English and real native usage.
Diagnostic: can you guess the meaning from the individual words? No → phrasal verb (learn as unit). Yes → literal verb + preposition.
A1 | Elementary | Beginners
A1 vs A2: A1 covers isolated survival phrases (Where is…?, I am…, How much?). A2 handles connected sentences about familiar routines and simple past events. If you can manage short fixed phrases but not string together original sentences about your day, you're still A1.
A1 is the entry level of the CEFR: greetings, introductions, numbers, basic present tense, and core function words.
Diagnostic: can you describe yesterday using past tense? No → A1. Yes → you're moving into A2.
Easy
Easy vs Medium vs Hard: Easy = one rule, obvious answer, A1–A2. Medium = one rule but realistic distractors, A2–B1. Hard = interacting rules, edge cases, B2+. Start Easy to check you have the basics before moving up.
The Easy tag filters for single-rule, short-sentence, common-vocabulary challenges designed for beginners or for anyone wanting a confidence check on fundamentals.
Diagnostic: if you get Easy questions wrong, stay here — your foundations need work. If they feel trivial, move to Medium.