小学英语三至六年级重点词汇和句子答:四、同音异形词 如:to/too/two, their/there, right/write, pair/pear, four/for, know/no, sun/son. 五、反义词 如:day-night, come-go, yes-no, up-down, big-small. short-longtall, fat-thin, low-high, slow-fast, 六、名词复数的变化规则 1.一般情况下,直接加s, 如:book-books,bag...