这两个音在发音时口型基本一致，唯一的区别就是发/s/时，声带不振动，而发/z/时，声带要振动。
一看就明白
发音规则对对碰 Rules in Pairs
一听就会读
单词句子模仿秀 Words and Sentences
· 含/s/有的单词、词组与句子
ask 问
consider 考虑
essay 散文
excellent 卓越的
fast 最快的
last 最后的
must 必须
past 过去
recent 最近的
task 任务
see the sea 看大海
seek some books 找一些书
seem to 似乎
sing a song 唱首歌
Sadness and gladness succeed each other.
悲喜互继，哀乐相续。
Sara feels sick on the sea. 萨拉晕船。
Second thought are best. 三思而后行。
Speech is silver. Silence is gold. 雄辩是银，沉默是金。
· 含/z/有的单词、词组与句子
busy 繁忙的
cousin 堂兄堂妹
crazy 疯狂的
fuzzy 模糊的
pleasant 令人愉快的
Tuesday 星期二
wisdom 智慧
as 因为
buzz 嗡嗡声
choose 选择
cozy clothes 舒适的衣服
doze off 打瞌睡
examine her disease 检查她的病症
Nobel Prize 诺贝尔奖
Her husband has a bad ear for music. 她丈夫对音乐一窍不通。
It is easy to be wise after the event. 事后诸葛亮谁都能当。
It is not easy to zip up his jacket. 给他的夹克衫拉上拉链真不容易。
Liz is very lazy. 莉兹非常懒。
一练就上瘾
超级趣味练功坊 Practice Makes Perfect
·情景会话
A：What did you have for supper?
你晚饭吃的是什么?
B: Rice and fried chickens.
米饭和炒鸡块。
·绕口令
He kisses the miss and she misses the kisses.
他吻那位小姐，而她对这些吻念念不忘。
Those busy bees buzzed busily around the busy beehive.
那些忙碌的蜜蜂在蜂窝四周嗡嗡地叫个没完没了。
