课文详注 Further notes on the text

1.I thought so.  我也这样想。
so 是代词,意为“这样”、“如此”。 I think so的否定式为I don't think so(我不这样认为)。类似用so的短句如:
I hope so.  我希望如此。
I expect so.  我期待如此。
I told you so.  我这么告诉过你的。

2.have another look  再(仔细)看一眼

3. look old  看上去老
这里look是系动词,后跟表语。

4.at least  至少

5.I'm sure she is.  我肯定她有40岁了。
其后省略了 at least forty。

6.not more than twenty-nine myself.  我自己还没29岁
其中not more than是“不超过”、“不到”的意思。这里反身代词myself是I的同位语,用来加强语气。
She did it herself.  这事是她自己做的。

语法 Grammar in use

表示猜测和推断的情态助动词must和can't(1)

表示最有力的推论的最常用的形式是must和can't。这时,它们一般与系动词be连用。肯定的推断用 must be来表示,否定的推断用 can't be来表示,而不用mustn't。请看例句:

He can't be a doctor. He must be a dentist.
他不会是个医生。他一定是位牙医。

She can't be Danish. She must be Norwegian.
她不会是丹麦人。她一定是挪威人。

He can't be shaving. He must be having a bath.
他不可能在剃胡子。他一定是在洗澡。

It can't be cheap. It must be expensive.
它不会便宜。一定价格昂贵。

He can't be ill. He must be tired.
他不可能生病了。他肯定是累了。

词汇学习 Word study

1.famous adj.
(1)著名的;出名的:
She's a very famous actress.
她是一位非常著名的女演员。

(2)<口>第一流的;极好的:
To my surprise, he had a famous appetite.
让我感到惊讶的是,他有着极好的胃口。
This is famous weather for a stroll.
这是散步最理想的天气。

2.at least
(1)至少:
This antique vase is worth at least £20,000.
这只古花瓶至少价值两万英镑。
At least, you should consider our suggestions.
至少你应该考虑一下我们的建议。

(2)反正;无论如何;不管怎样:
He has no plans to go abroad yet, at least as far as I know.
他尚未有出国的计划,至少据我所知是这样的。
That party wasn't exciting at all, but at least it filled the time.
那个聚会一点儿都不令人兴奋,但不管怎样,它使人打发了那段时光。