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NOTES TO THE TEXT
A person who is deaf when he is born, is usually dumb as well.
换句话说就是“先天的聋哑人”：He is born to be a deaf and dumb person.
这句话中as well的意思就是“也”、“和”，与副词too相近，两者一般都用在肯定句末尾，比如：
If you will go, I will go as well. / If you will go, I will go, too. 如果你愿意去那我也去。
Annie Sullivan was Helen's tutor, and she was her friend as well. / Annie Sullivan was Helen's tutor, and she was her friend, too. 安妮•沙莉文是海伦的家庭教师，她也是海伦的朋友。
上面两句中as well和too可以替代使用，英文中还有一个词also也可以代替as well和too使用，但是also用在书面语当中比较多，而且其位置也特别灵活。例如：
Mary is a businesswoman. She is also a mother. 玛丽是一位女商人，她也是一位母亲。（also放在系动词之后）
I have written the letters. I should also have posted them. 我写了那些信，我本来也应该把它们寄出去的。（also放在第一个动词should之后，当有一个以上的动词时，also应该放在第一个动词之后。）
I play squash and I also play tennis. 我打壁球，也打网球。（also放在主要动词play之前）
以上例句表明，as well，too和also都用在肯定句中，而在否定句中则必须用either这个词，例如：
If you won't go, I won't go either. 如果你不去，我也不去。
Annie Sullivan was not deaf and she was not blind either. 安妮•沙莉文既不聋也不哑。
Mary is not a businesswoman. She is not a mother either. 玛丽既不是位女商人也不是位母亲。
I don't play squash and I don't play tennis either. 我既不打壁球，也不打网球。
从以上的例句中看出，as well，too和also都用在肯定句当中，as well和too放在句子的末尾，also的位置比较灵活，在否定句中则必须用either。
She fell ill and had a fever.
1）“fall + 形容词”表示“陷入某种状态、变成”的意思，例如：
He fell asleep. 他睡着了。
He suddenly fell grave. 他突然板起了面孔。
He fell ill with cancer. 他得了癌症。
2）have的用法：
I have a bad headache. 我头疼得厉害。
I have a sore throat. 我嗓子疼。
Do you often have colds? 你常患感冒吗？
Then in 1887, a teacher, Annie Sullivan arrived at the home of the Kellers to be Helen's tutor.
tutor是“家庭教师”的意思，英语中还有一个专门指“家庭女教师”的词：governess，但没有专指家庭男教师的词。
tutor当其他意思用时英美的用法是不同的，在美国大学里tutor指“助教”。
Even if you have not read it, you may have heard of Helen Keller.
may have done sth. 表示对已发生事情的猜测。例如：
He may have been at home yesterday. 他昨天可能在家。
They may have left last night. 他们可能是昨晚走的。
如果说话人的口气比较肯定，比如前两句的说话人肯定“他昨天在家”或者“他们肯定是昨天晚上走的”，那么就可以用may as well have done sth.。为了便于记忆，可以把well理解成with good reason（有充分理由的）或者reasonably（有理由的）。例如：
He may well have been at home yesterday. 他昨天很可能在家。
They may well have left last night. 他们很可能是昨晚走的。
前面第一、二句中的may可以用might代替，但是句子就包含了两层意思，例如：
He might have been at home yesterday. 他昨天可能在家（还有一层意思是“他昨天本来可以在家的”）。
They might have left last night. 他们昨晚可能已经走了（另外一层意思是“他们昨晚本来是可以走的”）。 象以上的两个句子在用了might的情况下，到底是第一种还是第二种含义就要取决于上下文和语言环境了。
在以下的情况下may have和might have不能替代使用：
They might have left last night. But they didn't. 他们本来昨晚可以走的，但他们没有走。（句中的might不能用may代替。）
