Unit 7 Summer holiday plansIntroduceT:Do you know anything about Australia?T:Do you want to know something about London?Who is from London?Words children tldrn 名词，意为“孩子们”，为复数，其单数形式为child。eg：The children are playing in the playground.孩子们在操场上玩耍。小练习：用所给词的适当形式填空：The _（child）climb up the trees.children【拓展】（1）通过内部元音变化的方法来构成复数形式。eg：manmen;womanwomen;footfeet ;tooth teeth ;goose geese Words（2）以f或fe结尾，在构成复数时，去掉f或fe加-ves。eg：thief thieves;wife wives ;life lives ;knife knives;wolf wolves （3）单、复数相同的形式。eg：she
