2017年6月英語四級語法重點複習知識點講解：目的狀語從句

新東方在線英語四級頻道整理了2017年6月英語四級衝刺階段語法複習重點知識點，希望大家認真記憶。

目的狀語從句

可以由that，so that，in order that，lest，for fear that，in case等詞引導;

lest：以防，從句中的謂語動詞必須用should+動詞原形;

eg: He wrote the name down for fear that(lest) he should forget it.

He took the umbrella with him lest it should rain.

in case：以防，與lest不同，從句里的時態不做特殊變化;

eg：Take the umbrella with you in case it rains.

for feat that：和lest保持一致;

eg：A variety of activities should be organized so that participants can remain active as long as they want and then go on to something else without feeling guilty and without letting the other participants down.

let…down…：讓……感到氣餒。