A comma (,) is a punctuation mark that is frequently used in sentences.

They connect two clauses.

... "use in a sentence the word fixed input" "use in a sentence … However, others argue that discipline is the responsibility of parents. However, there are differences that mean these words are not interchangeable. Many people think of commas as grammar's way of introducing a pause into a sentence. Whereas I did history. Whereas is a little different, because its meaning makes it an unlikely sentence opener. Whereas Sweden has very cold winters, UK winters are usually quite mild. Commas separate ideas, add pauses, and help you to list things clearly. 3. ‘The Arctic is an ocean basin with peripheral continents, whereas the Antarctic is continental.’ ‘It was based on polar coordinates whereas earlier instruments were based on cartesian coordinates.’ ‘Her car had been found on the Yorkshire moors, whereas she'd reappeared about fifty miles from there.’ While, for example, can be used to introduce a time-clause. For example, consider this sentence: Some couples now both have to work, whereas only one person did before. In the second example, the comma after although appears to form a pair with the comma after warm, making the introductory clause "when the water is warm" look as though it is parenthetical, or nonessential. Is this sentence written correctly? You can't use 'however' and 'whereas' in the same way. We can use while instead of whereas. While While is mainly used to introduce a time-clause. 36. While she was playing, I was studying. How to Use ‘Although’, ‘Whereas’ and ‘Despite’ Three tricky words for students who speak English as a second language are ‘although’, ‘despite’ and ‘whereas’. When should you use a comma? Joshua asked me the following question: "Can you explain while, whilst, whereas, as? A sentence such as She went on to become an architect, whereas I did history would not normally be split in two to become She went on to become an architect. They seem like they serve the same function, which is to compare and contrast things. On the other hand, some languages have 30 or more. ‘Although’ and ‘whereas’ are conjunctions, which means they’re used to join two ideas together; ‘despite’ is typically a preposition, so it indicates the relationship between words in a sentence. Whereas cannot be used to introduce a time-clause. Follow these general rules in order to avoid grammar mistakes: Use 'however' (followed by a comma) at the beginning of a sentence to contrast with the previous sentence: Some people believe that schools are responsible for the behaviour of their students. They connect two clauses. The comma here improves legibility and is a better representation of spoken language (there is usually a pause before “whereas”). UK winters are usually quite mild, whereas Sweden has very cold winters. On the other hand is not a conjunction. Conjunctions connect two different clauses. Don’t use a comma before while when you mean “during the same time.” Do use a comma before while when you mean “whereas” or “although.” When while is used as a conjunction, it has two meanings.