Yes. Spelling is very important in English. There are many words in Englishthat are pronounced the same way, but are not spelt the same way. For example: 'There' (place) and 'their' (pronoun). 'There is a man in the park.' 'The man in the park is their father.' When you write in English it is always important that your spelling is good. If your spelling is bad, people might think that your English is weak.