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      -s is [s] after voiceless sounds.    start learning
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      shops. writes. Mick's. cliffs.   
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      -s is [z] after voiced sounds.    start learning
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      -s/-es is [iz] after the sounds [s], [z], [∫], [Ʒ], [ʧ] and [ʤ].    start learning
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      prices. loses. watches. Mr Blish's.   
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      After the sounds [s], [z], [∫], [Ʒ], [ʧ] and [ʤ] the end is -es.    start learning
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      dish → dishes. box → boxes. watch→ watches.   
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      if the word ends in e, the ending is -s.    start learning
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      price → prices. lose → loses. realize → realizes.   
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      We leave out e before an ending with a vowel, e.g. -ing, -ed, -er, -est.    start learning
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      write → writing. like→ liked. nice → nicer. fine → finest.   
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      If the e is part of a vowel sound (e.g. agree), we do not leave it out before -ing.    start learning
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      We do not leave out e before an ending with a consonant, e.g. -s, -ly.    start learning
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      make → makes. nice → nicely.   
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      But we leave out e from true and whole before -ly.    start learning
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      true → truly. whole → wholly.   
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      When an adjective ending in - le becomes an adverb, e changes to y.    start learning
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      possible → possibly. probable → probably.   
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      -ed is [t] after voiceless sounds.    start learning
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      stopped. looked. passed. laughed.   
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      -ed is [d] after voiced sounds.    start learning
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      showed. played. cleaned. used.   
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      -ed is [id] after [t] and [d].    start learning
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      In short words with one written vowel (a, e, i, o, u) + one written consonant (n, p, g, t, etc.), we double the consonant (nn, pp, gg, tt) before an ending with a vowel, e.g. -ing, -ed, -er, or -est.    start learning
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      plan → planning. stop → stopped. big → bigger. fat → fattest.   
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      We do not double the consonant if it is y or w (e.g. play, show)    start learning
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      play → playing. show → showed. clean→ cleaner. short → shortest.   
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      In longer words we double the consonant if the last part of the word is stressed (e.g. begin).    start learning
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      We do not double the consonant if the last part of the word is unstressed (e.g. visit).    start learning
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      But we double l in British English (e.g. GB travelled, USA traveled.    start learning
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      In words ending in a consonant (d, l, r, n, p etc.) + y, the y changes to ie before -s and to i before -ed, -er, -est and -ly.    start learning
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      lady → ladies. fly → flies. carry → carried. funny → funnier. silly → silliest. happy → happily.   
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      In the possessive form we use an apostrophe + s with a singular noun and an apostrophe with a plural noun.    start learning
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      the secretary's desk. the secretaries' desks.   
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      y does not change after a vowel.    start learning
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      y does not change before -ing.    start learning
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      ie changes to y before -ing.    start learning
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