VOA慢速英语:Housing Plan Threatens Seed Bank in Russia

let与一般动词不同，它用于动词+宾语+动词原形结构，即let后面可接名词或代词，再接不带to的动词不定式。其意思为“允许”、“让”。

请看例句：

She lets her son play in the garden.

她让她的儿子在花园里玩。

Her parents wouldn't let her go out with that boy.

她的父母不允许她与那个男孩子一起出去。

Just let me try!

就让我试试吧！

They didn't let the guests smoke in the lobby.

他们不允许客人们在大厅吸烟。

2.The station would not be at all easy to move, even if enough land could be found quickly.

not at all一点也不

例句：I was not at all pleased with the results.
      我对结果觉得一点也不满意。

      I came near to not doing my homework at all.
      我几乎不作家庭作业。

3.The experimental station includes plants that are not found in any other seed bank.

any other任何其他的

例句：Are there any other problems?
      还有其他的问题吗?

4. The huge, icy space holds extra copies of seeds from other seed banks. In February, it received its half-millionth seed variety to keep safe.

序数词的表达：

1)许多序数词是由相应的基数词后加th构成的，如：four/fourth，six/sixth，ten/tenth，sixteen/sixteenth，但是nine变为序数词是ninth，而不是nineth。twentieth, thirtieth, fortieth 等表示整十的序数词，由相应的基数词将词尾y改为ie，再加th 构成。

first, second, third 通常可缩写为1st, 2nd, 3rd。凡是以th结尾的序数词可缩写为“基数词+th”：4th, 5th, 9th, 11th, 60th, 128th等。

2)非整十的多位数，将个位数变成序数词即可：twenty-first(第21)，thirty-sixth(第36)，ninety-ninth(第99)，three hundred and sixty-fifth(第365)等。

3)hundred, thousand, million 等序数词形式为 hundredth, thousandth, millionth 等：

five hundredth (500th)第500   ten thousandth (10, 000th) 第10000