Grammar is often referred to as the set of rules of a language, but it is more appropriate to consider it a resource for expressing ideas. It gives you a choice of how to write. These choices can affect the content of your writing, the organisation of it, and your relationship with the reader.
At a basic level, sentences contain the following: a capital letter at the beginning, a full stop or other punctuation at the end, and a verb (doing word). Every sentence you write should make sense independently, even without the one before or after it. Remember to:
Avoid sentence fragments:
Several cities such as Paris, New York and Melbourne, are hoping to host the event.
× Several cities are hoping to host the event. For example, Paris, New York and Melbourne.
Avoid very long sentences with unnecessary language:
× Moreover, another viewpoint could be that the host cities should be able to provide barrier free access to the venues to ensure that all participants and spectators can enter the venues easily with the aim of increasing the audience which will therefore increase the sales of tickets and the overall profit of the event.
Host cities should be able to provide barrier free access to venues with the aim of increasing the number of spectators and therefore sales of tickets.
Short, clear sentences help you avoid grammatical mistakes and make it easier for the reader to follow the line of argument. If in doubt, split long sentences up into two or three. This is especially important if you find writing very challenging or if English is not your first language.