VOA慢速英语:Fight to End Rinderpest Is Declared a Success

1.Official confirmation is not expected until May, when the organization will have reports from the last few countries.

not until直到...才...

例句：I shall not quit my job until after I get my bonus.
      我要在领奖金以后再辞职。

Not until位于句首时句子倒装：

Not until the child fell asleep did the mother leave the room.

如否定词不在句首不倒装：
　　
The mother didn't leave the room until the child fell asleep.

强调

“not…until…”句型的强调结构为“It is not until…that…”应注意把否定词not转移到until前面。如：I didn't go home until rain

stopped.(直到雨停了我才回家)。

　　强调句为：It was not until rain stopped that I went home.

　　I didn't know the news until yesterday.(直到昨天我才知道那个消息)

　　强调句为：It was not until yesterday that I knew the news.

2.In Africa in the eighteen hundreds, rinderpest killed eight out of ten infected cattle.

eight out of ten表达分数

3.This was probably because of careful efforts to prevent the import of sick animals.

probably,Possibly,perhaps,maybe的区别：

这四个副词都表示“或许、大概”的意思。

1）Perhaps和Possibly大体同义，它表示的意思是“也许如此，也许不如此”。例如：

Perhaps the letter will come today.

It is possibly true.

2)Probably的肯定店气最强，有most likely的意味，表示某事可能发生。例如：

The singer will probably succeed.

John will perhaps succeed.

3)maybe比perhaps在用法上较为普通，而又是不很庄重的用语，多用于美国口语，例如：

I think maybe they don't want him,he's so cross.

Maybe it is true.