2024年3月30日发(作者：戴尔笔记本官网驱动下载)
时间状语从句和省略：连词
一、时间状语从句
1. 某些易用错的连词。
(1) 连词immediately / directly / instantly和词组the moment,
the minute意为“一……就……”，相当于as soon as。如：
The thief ran away the moment / directly he saw the
policeman.
[注意]
a. immediately / directly / instantly也是副词，在句中作状语。
如：
I didn’t immediately realize how serious the situation was.
b. 介词on / upon +名词 / V-ing也表示“一……就……”。如：
Yao Ming was surrounded by the media on his arrival at the
airport.
On seeing the painting by Van Gogh, I fell in love with it at
once.
(2) 词组the first time, the last time, each time, every time以
及by the time，都引导时间状语从句。如：
The first time I spoke English before foreigners, I was a
student of high school.
Every time I meet the policeman at that crossroads, he will
give me a big smile.
[注意] for the first time是介词短语，意为“第一次……”，常用
来作状语。
They had a face-to-face talk for the first time.
(3) when, while和as引导时间状语从句的区别：
when引导时间状语从句时，可与短暂性动词连用，也可与延续性
动词连用；而
while只能与延续性动词连用；as表示两个动作的同时性，意为
“一边……，一边……”。如：
When I entered the classroom, all the students looked up at
me curiously.
Could you look after Robert while I am preparing the report?
The children sang as they climbed the mountain.
2. 时间状语从句中的时态。
(1) when, as soon as, every time, immediately, the moment
等在引导时间状语从句时，若从句用一般现在时，主句用一般将来时。
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