The girl who is playing tennis is my friend.

This is the place where I hid the key.

非限制性定语从句提供句子意义以外的额外信息，要用逗号隔开。例如：

The accident, which happened yesterday, has led to three death.

The professor gave me a lot of advice, from which I benefit a lot.

非限制性定语从句中的关系代词which可指整个句子。例如：

It is snowing heavily, which makes children feel excited.

5. 形容词和副词的比较

more and more （越来越......)

Our city is getting bigger and bigger.

He felt he began to see things more and more clearly.

less/the least （不如/最不......）

less和the least是more和the most的反义词，也可以和形容词一起使用进行比较。例如：

The boy behaves less politely than his brother.

This hotel is the least comfortable I've ever stayed.

可用于修饰形容词比较级的词，表达两物间差别的程度：

much, a lot, slightly, a little, almost, a bit, far, even, still......

6. 状态或动作动词

英语中动词分为两类：动作动词和状态动词。动作动词描述动作，可用于一般时态和进行时态；状态动词描述状态，一般不用于进行时态。以下是常见的状态动词：

表达思维活动：admit, agree, believe, mean, prefer, remember, want

表达情感的动词：adore, love, care, hate, hope

表示拥有和存在的动词：appear, belong, include, seem, own

感官动词：feel, hear, sound, taste, look

注意：感官动词后用形容词修饰，而不是副词。例如：

The roses smell beautiful.

1. 【2015·浙江】 Listening is thus an active, not a ______, behavior consisting of hearing, understanding and remembering.

A. considerate B. sensitive C. reliable D. passive

2.【2015·北京】 Opposite is St.Paul's Church, ______you can hear some lovely music.

A. which B. that C. when D. where

3.【2015•陕西】 As the smallest child of his family, Alex is always longing for the time ______ he should be able to be independent.