高三英语重要知识点：分词作状语

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难点形成原因:

1. 对在句中作时间、条件、原因还是别的状语不是很清楚。

2.分不清何时用现在分词、何时用过去分词。

解决办法：

1.理解分词作状语时可以转换成相应的状语从句。

2.分清何时用现在分词、何时用过去分词。

用法讲解：

1. 分词或分词短语作状语时，可以表示时间、原因、让步、条件，方式或伴随状况。通常可转换成相应的状语从句;表示方式或伴随状况时可以转换成并列句或非限制性定语从句。例如：

Put into use in April 2000 (=When it was put into use in April 2000), the hotline was meant for residents reporting water and heating supply breakdowns. 分词短语作时间状语

Blamed for the breakdown of the school computer network (=Because she was blamed for the breakdown of the school computer network), Alice was in low spirits. 分词短语作原因状语

Given time (=If he is given time), he’ll make a fist-class tennis player. 分词短语作条件状语

We often provide our children with toys, footballs or basketballs, thinking that all children like these things. (= and think that all children like these things.) 分词短语作伴随状语

2. 有时为了强调，分词前可带when, while, if, though, as if, unless等连词一起作状语，以便使句子的意思更清楚、更连贯。例如：

When comparing different cultures, we often pay attention only to the differences without noticing the many similarities.

Though tired, he still continued reading.