The correct answers are:
- I finished the essay on time; however, my dog literally ate my laptop.
- Though I finished the essay on time, my dog literally ate my laptop.
- I finished the essay on time. My dog literally ate my laptop, though.
However is used with a semicolon (or a period) and a comma to link two independent ideas.
Though can act as a subordinating conjunction at the beginning of the clause (just like "although") AND as an adverb at the end of a sentence.
"Although" cannot be followed immediately by a comma to start a new sentence (that creates a sentence fragment), and "however" cannot be squeezed between two commas to join two full sentences (that creates a comma splice).
Sentence and structures
The Sentence and structures tag is the umbrella for everything about how words combine in English: sentences, clauses, phrases, and the syntactic relations between them. Topics gathered here include word order, inversion, supplementation, coordination, negation, indirect speech, and deixis and anaphora.
Browse here when you're past parts-of-speech basics and want to understand how full sentences are assembled — the level where punctuation, comma rules, sentence variety, and clause linking all start making sense as one system.
Conjunction
A conjunction is a word that connects other words, phrases, or clauses. English has two main types: coordinating conjunctions join units of equal weight (and, but, or, so, yet, for, nor — the FANBOYS), while subordinating conjunctions introduce dependent clauses (because, although, if, when, while, since, unless).
Conjunctions are how you build compound and complex sentences instead of stacking short ones. The choice of conjunction signals the relationship between the ideas — addition, contrast, cause, condition, time — so picking the right one shapes the whole meaning.
Punctuation
Punctuation is the set of visual marks — periods, commas, question marks, colons, semicolons, apostrophes, quotation marks, hyphens and dashes — that show readers where sentences begin and end, where pauses go, and how parts of a sentence relate.
Punctuation does two jobs: it follows the rhythm of speech (where you'd pause aloud) and it marks the structure of clauses. Mismatch the two and writing reads either as breathless or as choppy. Mastering the basics is a small investment with huge returns — clear punctuation makes prose look careful and considered.
Adverb
An adverb modifies a verb, an adjective, or another adverb — adding information about how, when, where, how often, or to what degree something happens: she sings beautifully, unbelievably fast, we go there often. Many adverbs end in -ly, but plenty don't (well, fast, hard, almost).
Adverbs matter because they're how you add nuance without piling on extra clauses. Used well, a single adverb can sharpen a vague sentence (she answered → she answered honestly), but misplace one and the meaning drifts in a way native speakers immediately notice.
Semicolon
The semicolon ( ; ) joins two closely related independent clauses without a coordinating conjunction: My wife would like tea; I would prefer coffee. It also separates list items that already contain commas: London, England; Paris, France; Madrid, Spain.
The semicolon sits between the comma (lighter) and the period (full stop) in strength. Used well, it signals tighter logical connection than two separate sentences would. It's underused by careful writers and overused by sloppy ones — the most common mistake is treating it as just a fancy comma.
B1 | Intermediate
B1 is the intermediate level in the CEFR framework — the point where you stop relying on memorised phrases and start handling everyday English independently. At B1 you can describe experiences, explain opinions, and follow most clear standard speech on familiar topics like work, travel, and hobbies.
Grammatically, B1 means combining tenses with precision, building complex sentences, and starting to use passive voice, modal verbs for necessity and possibility, and verb patterns (gerund vs. infinitive). Knowing your level shapes what you study next: pushing too far ahead frustrates you; staying below your level wastes time.
Difficulty: Medium
The Medium difficulty tag marks questions and challenges in the middle of the difficulty range — typically suitable for A2 to B1 learners. Expect a single rule with realistic distractors, longer sentences, and contexts where you have to think before answering rather than reading off the obvious choice.
Filter by Medium when you're past the absolute basics and ready to consolidate. It's the level where most lasting progress happens — easy enough that you can finish without exhausting concentration, hard enough that getting it right means you've actually understood.