2 . 选出下列句子的句子类型

①主语＋谓语　②主语＋谓语＋宾语　③主语＋系动词＋表语　④主语＋谓语＋双宾语　⑤主语＋谓语＋宾语＋宾语补足语　⑥主语＋谓语＋状语　⑦主语＋谓语＋宾语＋状语

1. Time flies.
2. He enjoys reading.
3. The sun keeps us warm.
4. The dinner smells good.
5. The red sun rises in the east.
6. My brother is an excellent swimmer.
7. This is an English－Chinese dictionary.
8. I want to have a cup of tea very much.
9. Would you please pass me the dictionary?
10. She cooked her husband a delicious meal.
11. His failure in the exam has taught him a lesson.
12. She showed me how to run the machine.
13. The terrible accident happened yesterday afternoon.

4 . 数代学生都叹服于富兰克林的勇气与追寻真理时采用的科学手段。（汉译英）

7 . It was at the age of 5 ________ he left his hometown for Shanghai.

A．that

B．when

C．which

D．as