一课一题一语法：新概念英语第2册第61课 / 开普饭

【往期回顾】

【答案】C

【简析】通过读题干可知，该题要考查的是if引导的条件状语从句的用法，侧重考查的是“主将从现”的用法，即主句动词要用一般将来时will do，从句动词要用一般现在时。所以，主句要选will be，从句要选doesn't rain。

【本期内容】

下面我们继续本周《新概念英语2》第61课的重点句型或语法的分享。先来读一读课文：

一、课文原文

Lesson 61 Trouble with the Hubble

The Hubble telescope was launched into space by NASA on April 20, 1990 at a cost of over a billion dollars. Right from the start there was trouble with the Hubble. The pictures it sent us were very disappointing because its main mirror was faulty! NASA is now going to put the telescope right, so it will soon be sending up four astronauts to repair it. The shuttle Endeavour will be taking the astronauts to the Hubble. A robot-arm from the Endeavour will grab the telescope and hold it while the astronauts make the necessary repairs. Of course, the Hubble is above the earth’s atmosphere, so it will soon be sending us the clearest pictures of the stars and distant galaxies that we have ever seen. The Hubble will tell us a great deal about the age and size of the universe. By the time you read this, the Hubble’s eagle eye will have sent us thousands and thousands of wonderful pictures.

——选自《新概念英语》第二册，外语教学与研究出版社，1997年10月第1版

二、重点句型或语法

本课主要对比将来完成时、将来进行时和将来完成进行时的用法。

一、将来完成时

主要用来表示过去发生的事情会持续到将来某个时间，该事情可能到时已结束，也可能会继续持续下去，其基本用法为：

sb. will have done sth.

如：

They will have finished the project by the end of next month.
到下个月底，他们就会完成这个项目了。（已结束）
They will have been married for twenty years by then.
到那时，他们结婚就满20年了。