There are many words in the English language.You will never 1 the meaning of every word in English.When you read,you'll often find many 2 you do not know.You will not have enough time to 3 reading and try to find every new word in a dictionary.
Sometimes you can 4 the meaning of a new word because you know some parts of the new word.For example,if a word ends 5 the letters“er”,that word 6 be the name of a 7 or a thing that does a certain action.A writer is a person who writes. 8 it is not 9 to know the parts of a new word to understand it, 10 it will help you many times.