条件从句

Fergus Clydesdale, head of the department of food science and nutrition at the University of Massachusetts-Amherst, says bluntly that if the dangers from bacterially contaminated chicken were as great as some people believe.

that引导的宾语从句含中有一个if引导的条件状语从句和一个as引导的比较状语从句。

These conditional sentences have two parts: the condition, or si clause

条件句分为两部分：条件，或称si从句，和主句或称结果从句

A nation, which stopped working, would be dead in a fortnight.I should have called to make an airline reservation, but I didn't.The porter ought to have called the fire-brigade as soon as he saw the fire in the stock, which went up in smoke.

动词原形直接用在句子中也被看作是一种虚拟，最常见于正式文体中，动词原形一般用在条件从句中，有时倒装置于句首，同时这种用法也常见于独立句中表达愿望。

This is a nominative absolute structure, which is equal to a conditional clause.

这是一个带分词的独立结构，相当于一个条件从句。

Contract is worth nothing if the event does not take place in the agreed upon period of time.

分析： 这句不算太难。有一个if带头的条件从句。可翻译为

For instance, if it is a subject clause, object clause or predicative clause.

分析从句和短语的功能，例如，是否为主语从句，宾语从句，表语从句等，若是状语，它是表示时间、原因、结果、还是表示条件等等。

It rain tomorrow, you would have to put off the visit to the Yangpu Bridge.

导析：Should位于句首时，省略了if，属于虚拟语气条件从句中的省略。had和were也可以放在句首。

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。

And if you change your mind, you will not be penalized so long as you have not purchased your ticket and you are not holding a supersaver reservation, or so long as more than seven days remain prior to departure.

要点：这个句子是个主从复合句，其中if引导条件的从句，而主句中包含so long as 引导的三个条件状语从句，分别用and 和or将其连接起来。译文：如果你改变主意也可以，但条件是你没有买票，或者没有预定超级优惠票，或者至少在航班发出前七天告之。

If i had taken my raincoat when i came out this morning, i would not be wet now. I?ohG K,ly\Ka?zO

引导非真实条件从句的连词if在正式文件中有时可以省去， were， had，；t'5}，FP

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。