听前提示
一、三遍英文，一遍中文，再一遍英文。
二、从听懂的词入手，理解句子含义。
三、根据中英文意思，听不懂的多听几遍。
原文
401.
Some of them are healthy, but others are not.
他们中的一些人身体健康，但是其他人不是。
402.
My son is going to leave for France next week.
我儿子下周要去法国了。
403.
It is like looking for a needle in a haystack.
这好比大海捞针。
404.
Switch on the light. I can't see anything.
把灯打开。我什么都看不见。
405.
Let's talk over a cup of tea, shall we?
我们用喝茶的时间谈谈，好吗？
406.
If he is innocent, it follows that his wife is guilty.
如果他是清白的，那他妻子就有罪。
407.
Scientists can easily compute the distance between planets.
科学家们可以很容易地计算出行星之间的距离。
408.
A foreign language cannot be mastered in a year or so.
我们无法用一年左右就掌握一门外语。
409.
The police think the burglar entered through a basement window.
警察认为窃贼是从地下室窗口进入的。
410.
I don't like to go out when it's dark.
我天黑后不喜欢出门。
