名词复数的构成方法有规则的有：
(1)直接在名词后加s
如：orange—oranges; photo—photos
(2) 以x, s, sh, ch 结尾的加es
如：box—boxes; glass—glasses; waitress—waitresses; watch—watches;peach--peaches
(3) 以辅音字母加y结尾的改y为i加es
如：study—studies；library—libraries; hobby—hobbies; family—families
(4)以f, fe结尾的改f, fe 为v＋es
如：knife—knives; thief—thieves
（注:以o结尾的我们学过的只有mango加es, mango—mangoes其余加s,）
不规则的有
man—men; woman—women; people—people; child—children
动词动词第三人称单数的构成
(1)直接在动词后加s
如：run—runs; dance—dances
(2)以s,sh,ch,o结尾的加es
如：do—does;go—goes;wash—washes;catch—catches
(3)以辅音字母加y结尾的改y为i加es
如：study—studies; carry—carries
现在分词的构成
(1)直接在动词后加ing
如：sing—singing; ski—skiing
(2)双写词尾加ing
如：swim—swimming; jog—jogging;run—running
(3)以不发音的e结尾的去e加ing
如：ride—riding; dance—dancing; make—making
规则动词过去式的构成
(1)直接在动词后加ed
如：clean—cleaned; milk—milked; play—played
(2)以e结尾的直接加d
如：dance—danced; taste—tasted
(3) 以辅音字母加y结尾的改y为i加ed
如：study—studied;carry—carried
(4)双写词尾加ed
如：stop—stopped; jog—jogged
不规则的有：
am,is—was; are—were; do,does—did; have,has—had; go—went; meet—met; sit—sat; see—saw; get—got; tell—told; run—ran; come—came; steal—stole; read—read
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