状语

He promised not to tell anyone else about it. To treat comrades like enemies is to go over to the side of the enemy. The manager announced his intention to retire. The old man walked slowly on the ice in order not to fall down.

作状语 不定式中的动词仍然具有动词的特性，可以有自己的宾语和状语，另外虽然动词不定式在语法上没有表面上的主语，但它所表达的意义是动作，这一动作的执行者就是该动词的逻辑主语，动词不定式要和它的逻辑主语在语态和时态上保持一致。

When the film projector broke for a second time in the cinema, Some people in the audience hissed, and others made catcalls.

从句意上看，第一个简单句应为第二个并列句发生的时间状语，故用连词 when 来引导这个状语从句即可。

Had been doing have/has been doing 一般进行完成过去 was/were given was/were being given had been given 现在 am/is/are given am/is/are being given have/has been given /将来 will/shall be given / will/shall have been given /过去将来 should/would be given / should/would have been given

不定式：不定式：二不定式常考的考点：不定式常考的考点： 1不定式做定语不定式做定语----将要发生将要发生 2不定式做状语----目的不定式做状语目的 3不定式充当名词功能不定式充当名词功能---To see is to believe。

Slide159: I felt that if the day arrived when I was unable to lift one foot up one step and then drag the other painfully after it ---- repeating the process 14 times until, utterly spent, I would be through ---- I could then admit defeat and lie down and die.

L22-25 本句中that 引导了一个宾语从句，这个宾语从句中又包含一个if引导的条件状语从句，而这个条件状语从句中还包含一个由when引导的定语从句。

New Zealand is an important agricultural country, with cattle farming on the North Isled, while the hilly South Island has more sheep farms.

新两兰是一个重要的农业国家，北部养牛，而南部山区养羊居多。 with +名词+现在分词/过去分词/介词短语/副词/动词不定式/形容测构成 with 的复合结构，这种结构通常在句子中作定语或状语，作状语时，表伴随状况或原因。

When two cars traveling at 30 mph hit each other ①, an unbelted driver would meet the windshield ② with a force equal to diving headfirst into the ground from a height of 10 meters ③.

分析：①是状语从句，②是主句，③是 with 引导的介词短语作状语，修饰谓语。这样，把整个句子划为4个意群，可以大大提高阅读速度。

When two cars travelling at 30 mh hit each other①, an unbelted driver would meet the windshield② with a force equal to diving headfirst into the ground from a height of 10 meters③.

分析：①是状语从句，②是主句，③是with引导的介词短语作状语，修饰谓语。这样，把整个句子划为4个意群，可以大大提高阅读速度。

Is it an adverbial clause of purpose or of result ?

是目的状语从句还是结果状语从句？

A purpose clause usually comes after a main clause. A reason clause can come

目的状语从句通常置于主句之后，而原因状语从句可置于主句前后。

Do you remember one student who was taller than any other student in your class when you were in Shizhuang Middle School?" What he said reminded me that he was a classmate of mine. I couldn't help shaking him by the hand,"Glad to see you.Be seated please.

状语从句几乎是每年高考必考的内容，在高考试题中加上其它从句的干扰，以及倒装句，强调句的介入，使得状语从句更为复杂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。