SPELLING RULES
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1. Most words add s to the root forms without any change (barn - barns).八杆子打不着
2. Words ending in sh, ch, ss, x, and z, usually add es to form the PLURAL (bush - bushes).
3. Words ending in a consonant and y change the y to i and add es (party - parties).水脚
4. Some words ending in f change the f to v and add es (calf - calves).
5. Some singular words have different words for their plural form (man - men; mou - mice; goo-gee).
SUFFIXES
1. A letter or a syllable placed after a word to form a new word is called a suffix. Some suffix
es are s, es, ed, ing, er, est, ly, ful, able, ible, ment, ive, ance, ence, ion, tion, ition, ation, sion, ous, ious, less, and al. Sometimes a word will have two suffixes. For example, respectfully has the two suffixes ful and ly added to the root word respect.
2. Many words are formed by adding ed and ing without any change (furnish - furnished - furnishing).
3. Words ending in a silent e drop the e before adding ed and ing (move - moved - moving).
4. Words ending in a consonant and y change the y to i before adding ed, but do not make any change before adding ing (deny - denied - denying).
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5. Words ending in a vowel and y add ed and ing without making any other change (delay - delayed - delaying).
PREFIXES
1. 人参归脾丸的作用A syllable placed before a word to change its meaning is called a prefix. Some prefixes are im, un, in, co, dis, inter.
DOUBLING THE FINAL CONSONANT
1. Words of one syllable ending in a single consonant preceded by a single vowel double the final consonant before adding ed and ing (trim - trimmed - trimming).
2. Words of two or more syllables double the final consonant before adding ed and ing when the conditions are met: the last syllable ends in a single consonant preceded by a single vowel, and the accent is on the last syllable (refer - referred - referring).
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POSSESSIVE FORMS
1. 登录qq号码Singular nouns form the posssive by adding an apostrophe and s (pilot - pilot's).
2. Plural nouns that end in s add only an apostrophe to form the posssive (aviators - aviators').
3. Plural nouns that do not end in s add the apostrophe and s to form the posssive (men - men's).
