1. Then he spoke slowly, but I could not understand him.
于是他说话的语速放慢了些，但我还是听不懂。
知识点：对比学习：understand, comprehend, know都有“知道，明白，“理解”的意思。
understand是常用词，强调完全了解
People who speak the same language can easily understand one another.
说同一种语言的人能够很容易彼此了解。
comprehend侧重了解的过程
He comprehends mathematics.
他数学学得好。
know强调了解其中一部分的含义
She knows more about America than anyone else I know.
她比我认识的其他任何人对美国的了解都多。
2. I not only spoke English very carefully, but very clearly as well.
我的英语不仅讲得非常认真，而且十分清楚。
知识点：黄金句型：不但……而且……1) not only...but...as well 2) not only...but also...
当not only...but also...连接主语时，靠近谓语动词的部分，即but also后面的部分（名词或代词）决定谓语动词的单复数。
Not only the workers but also the manager was dismissed.
不仅工人们被解雇了，那位经理也被解雇了。
真题训练：Not only I but also Jane and Mary tired of having one examination after another. （1989年全国高考）
A.is B. areC. amD. be
3. "I am a foreigner," I said.
“我是外国人，”我说。
知识点：在国外如果听不懂对方的话可要求他讲慢一点，并说"I’m a foreigner."。在国内如果听不懂方言则不妨说“I’m a stranger here.（我不是本地人）”。
