注：当hardly或no sooner位于句首时，主、谓语要进行部分倒装。如：

Hardly had we got into the country when it began to snow.

No sooner had I started playing tennis outside than it started raining.

4. since, ever since引导时间状语从句时，表示"自从......以来"，其主句多用完成时。如：

　I've been very busy since I came back from holiday.

　He has been living in Leeds ever since he moved there 3 years ago.

5. 引导时间状语从句的词或短语还有：after, before, every time, the first / second ... / last time, by the time等。如：

　Every time I come, he is reading.

　By the time he was taken to the hospital he was nearly dead.

★让步状语从句

1. though, although, even if, even though引导让步状语从句，表示"即使，虽然，尽管"。注：though和although引导让步状语从句时，不与but连用，但可与yet, still等连用。如：

　Though / Although he' s got a good job now, he still complains.

　Even if / Even though it is difficult, we shall still do it.

2. as引导让步状语从句时，常将形容词、副词、名词或实义动词提到句首，构成倒装。though也可用于此结构。如：

　Old as / though I am, I can still fight.

　Child as / though he is, he knows a lot.

　Try as / though you may, you will never succeed.

3. while引导让步状语从句时，一般位于句首。如：

　While I understand your point of view, I do not share it.

4. "no matter +疑问词"或"疑问词+ ever"也可引导让步状语从句。如：

　No matter when (= Whenever) I'm unhappy, he cheers me up.

【即学即练】根据括号内的汉语提示补全下面句子（每空一词）。

1. No sooner had I gone outside ________ ________ ________ ________ (电话铃就响了).