教学目标：
词汇：form add
短语：put in order in conclusion
1.form . vi . vt. 形成，组成；组织
例:A cloud of smoke formed over the burning city. 在燃烧的城市上空开成了烟雾。
A plan began to form in his mind. 一个计划在他的头脑里形成了。
She formed the clay into a lively dog.
= She formed a lively dog out of the clay. 她用泥做了一只栩栩如生的狗。
