tailieunhanh - lỗi sai trong tiếng anh 4

Tham khảo tài liệu 'lỗi sai trong tiếng anh 4', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | ADDENDUM of novels for instance and -or for the piece of electrical equipment. However the distinction has become very blurred and the two spellings are considered by many authorities to be interchangeable. Use either for both meanings but be consistent within a single piece of writing. addendum singular addenda plural See FOREIGN PLURALS. adding endings Usually endings suffixes can be added to base words without any complications. You just add them and that is that . iron ing ironing steam er steamer list less listless However there are four groups of words which need especial care. Fortunately there are some straightforward rules which save your learning thousands of words individually. i The 1-1-1 rule This rule applies to words of ONE syllable ending with ONE consonant preceded by ONE vowel. . drop flat sun win When you add an ending beginning with a consonant to a 1-1-1 word there is no change to the base word drop let droplet flat ly flatly win some winsome See CONSONANTS. When you add an ending beginning with a vowel to a 1-1-1 word you double the final letter of the base word 4 ADDING ENDINGS drop ed flat est win ing sun y dropped flattest winning sunny y counts as a vowel when it sounds like i or e. See VOWELS. Treat qu as one letter quit ing quip ed quitting quipped Don t double final w and X. They would look very odd and so we have correctly tax ing paw ed taxing pawed ii The magic -e rule This rule applies to all words ending with a silent -e. . hope care achieve sincere separate When you add an ending beginning with a consonant keep the -e hope ful care less sincere ly separate ly achieve ment hopeful careless sincerely separately achievement When you add an ending beginning with a vowel drop the -e hope ing care er sincere ity separate ion achieve ed hoping carer sincerity separation achieved Do however keep the -e in words like singeing different from singing and dyeing different 5 ADDING ENDINGS from dying and whenever you need to keep the