2. but for =without I would not have passed the exam but for your help. =I would not have passed the exam if I hadn’t had your help.

3. on board (sth.) There are over 200 passengers on board the plane. I left the station after she went on board the train.

4. be on the point of doing sth. =be about to do sth. He was on the point of leaving when I went to see him.

5. take charge (of…)=be in charge (of) Who will take charge of the repair work?

6. double adj./n./vt./vi. a double bed/room; double doors I paid only twenty dollars for this old painting and Mr. Smith offered me double ($40) for it. They doubled the price of oil. The price of oil doubled.

7. like crazy He drove the car like crazy.

8. as/so long as You can borrow the book as/so long as you return it on time.

9. Every one of you should come. Everyone should come. 但： None of … 不可换成 No one of…

10. I will land you safe (safely). ( 形容词作宾语补足语 ) I laid him down dead. I left him standing by the counter. ( 分词作宾补）

11. stay strong and firm =remain strong and firm

12. some 30 years ago =about 30 years ago

13. scold sb. for (doing) sth.