Even if invited, I won't go.

　　＝Even if I am invited, ...（让步）

　　We will not attack unless attacked.

　　＝We will not attack unless we're attacked. （条件）

　　例题：

　　（1）_________________（Exhaust）, I slid into bed and fell fast asleep.

　　（2）___________________（worry） about the time available, Zhang Pingyu had made a list of sites she wants to see in London.

　　（3）___________________（see） from the moon, our earth, with water ______________（cover） seventy percent of its surface, appears as a "blue ball".

　　（4）____________________（follow） the guide, we started to explore the wild forest. 用现在分词或过去分词改写句子划线部分

　　（5）When she found her car stolen, she hurried to a policeman for help.

　　_______________________________________, she hurried to a policeman for help.

　　（6）As he was lost in thought, he almost ran into the car in front of him.

　　_______________________________________, he almost ran into the car in front of him.

　2. Never will Zhou Yang forget his first assignment at the office of China Daily. 周阳永不会忘记他在中国日报报社第一天上班的工作任务。

　　Not only am I interested in photography, but I took a course at university. 我对摄影不只是感兴趣，在大学我还专修过摄影。

　　Only when you have seen what he or she does, can you cover a story by yourself. 只有你见习了他们的工作以后，你才能独自进行新闻采访。

　　注意：下列否定词或半否定词及否定短语提到句首，句中需部分倒装。

　　never, seldom, hardly, rarely, scarcely, not a single..., not until..., not only..., by no means（决不）等

　　only＋状语位于句首，主句谓语部分倒装

　　（1）Only by practicing a few hours every day _____ be able to waste much time.

　　A. you can B. can you C. you will D. will you

　　（2）Not until the early years of the19th century _____ what heat is.

　　A. man did know B. man knew

　　C. didn't man know D. did man know

　　（3）_____got into the room, _____ the telephone rang.

　　A. He hardly; then B. Hardly had he; when

　　C. He had not; then D. Not had he; when

　　（4）______, I would have given you his address.

　　A. If you asked me B. You had asked me

　　C. Should you have asked me D. Had you asked me

　　（5）-Do you know Jim quarrel with his brother?

　　-I don't know, _______.

　　A. nor don't I care B. nor do I care

　　C. I don't care neither D. I don't care also

【模拟试题】

一. 用框内所给词组的适当形式完成下列句子（其中两个是多余的）