Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.

Input: Consider Input: You won't catch the train if you don't leave in time You won't catch the train if you won't leave in time I'm pretty sure the correct version is 'You won't catch the train if you don't leave in time', but I'm trying to explain it to someone and I don't know how to explain it. I also don't know how to google it. Can you please help me with a simple explanation or a link that explains it?.

Output: As implied in the comments, the specific meaning of the two are slightly different (albeit both grammatically correct). It helps to break down the contractions. You will not catch the train if you do not leave on time This phrase is neutral in its blame: not catching the train will happen if you, for whatever reason, do not leave on time. You will not catch the train if you will not leave on time This places blame more directly on addressee: 'will not' implies that the addressee plays a causal role in themselves being late for the train, as if they refuse to leave at the correct time.


Input: Consider Input: I have to write this on a website, which one is better? Are you looking for [...](description of our service)? You've come / You came to the right place!.

Output: When you mention something that happened in the past, its timing isn't mentioned and is perhaps no significance to your mention, and you're mentioning it because of its significance in relation to something happening in the present then the present perfect is suitable. In this case, 'You came to the right place' isn't grammatically incorrect, but it doesn't express as explicitly what 'You've come to the right place' does: That, because of your having come here, you are now, in the present, in the right place (to receive good service, to eat a delicious meal, etc.). This use of the present perfect is summarized here.


Input: Consider Input: it refers to a discrete life form that has properties of mind (i.e. experience and character, cf. sentience).


Output: cf., an abbreviation for the Latin word confer (the imperative singular form of 'conferre'), literally meaning 'bring together', is used to refer to other material or ideas which may provide similar or different information or arguments. It is mainly used in scholarly contexts, such as in academic (mainly humanities, physics and biology) or legal texts. It is translated, and can be read aloud, as 'compare'. -wikipedia