Final answer:
The incorrect use of EI or BI is a grammatical issue related to spelling. It is important to use correct spelling rules and consult a dictionary if unsure.
Step-by-step explanation:
The incorrect use of EI or BI is a grammatical issue related to spelling. EI is commonly used in English words like 'receive' and 'deceive,' while BI is rarely used. The correct spelling for the sound 'ee' is usually represented by IE, as in 'believe' and 'achieve.'
For example, incorrect spellings could be 'recieve' instead of 'receive' or 'beleive' instead of 'believe.' These spelling errors can make writing unclear and less effective.
To avoid this issue, it is important to use correct spelling rules and consult a dictionary if you are unsure of a word's spelling.