1. Grammar
English Grammar is complex, making it difficult to remember, master and use logically. Ensuring you use the correct grammar can be tricky, especially when you are in conversation with someone and they are speaking at an alarmingly fast pace. Learning grammar is like learning to drive, you can learn all of the theory, rules and regulations, but you won't be good at it unless you practice it and it starts to become second nature to you. Grammar is extremely important, incorrect use of grammar can confuse the person you are speaking to and even change the meaning of what you are communicating, what's more is native English speakers are hyper aware of grammar and will notice almost immediately if a grammatical error is made, even if this is the smallest of errors, English speakers are incredibly proud of the language and look negatively on it being used incorrectly.