重点讲解：
1. on vacation 度假；休假；
例句：We wenton vacationto Puerto Rico.
我们去了波多黎各度假-HWy,qdpx%RUO。
2. how about （用于引出相关的新话题）怎么样，如何；
例句：How aboutMary? How long has she lived there?
玛丽怎么样？她在那儿住多久了？
3. such as （用于举例）例如，像，诸如；
例句：Some freshwater fishsuch aspike can withstand levels of acidity.
一些诸如梭鱼等淡水鱼可以抵御相当程度的酸性,VBer|FPQSvU。
4. as well 也；还；
例句：She had a great deal of knowledge about Earth studies,as well.
她对地球科学的了解也不少=7~l2n,zlp。
5. as well as 除…之外；也；还；
例句：It took great imaginationas well aspatience for her to teach the deaf-blind children to speak.
她用非凡的想像力和耐心教盲聋儿童说话LWxix2yvW[K5&6UD。