练习：

1. Fill in the blanks with the given verbs in the proper subjunctive mood and translate the sentences into Chinese.
1. Were there no dust, there ________ (be) either very strong sunshine that________(be) harmful to us or a black shadow in which we ________(see) nothing.
2. If Newton were to come alive today, he ________ (find) many things to puzzle and excite him, his first concern ________ (be) with the vast changes that have taken place in the concepts of space and time.
3. I propose, Mr. Chairman, that the meeting ________ (postpone) until next Thursday.
4. ________ I ________ (realize) what you intended, I should not have wasted my time trying to explain matters to you.

2. Translate the following sentences into Chinese:
1. Should you not wish our agent to call, please let us know.
2. If I were (was ) better qualifies, I would accept their offer.
3. Had you worked harder, you would have succeeded.
4. Without sunlight, animals and plants would soon die.
5. When we look at the sky at night, it seems as though all the stars were at the same distance.
6. Would it be all right if I came round at eight?