《2025年中学生世界八年级英语上册沪教版五四制》

( )1.Young kids won’t be interested in the book ______ it has many pictures.

A.if
B.unless
C.though
D.because

答案： B

( )2.You should report your trip to the school ______ you travel outside the city.

A.unless
B.until
C.if
D.while

答案： C

( )3.The wood will float in the water ______ we drop it into the river.

A.as long as
B.as if
C.now that
D.even though

答案： A

( )4.If Shanghai builds more parks, more birds ______ back to live here.

A.come
B.came
C.have come
D.will come

答案： D

( )5.You aren’t allowed to use the emergency exit unless there ______ a fire.

A.is
B.was
C.will be
D.had been

答案： A

Ⅱ. Rewrite the sentences as required.
1. Unless you keep ice cream in a freezer, it melts soon. (保持句意基本不变)
______ you ______ keep ice cream in a freezer, it melts soon.
2. Jay can’t find the address quickly if he doesn’t have a map. (保持句意基本不变)
______ Jay ______ a map, he can’t find the address quickly.
3. Do exercise every day. You will lose weight. (两句合并为一句)
You ______ lose weight ______ you do exercise every day.
4. Don’t touch the wet wire. You will get an electric shock. (两句合并为一句)
______ ______ touch the wet wire, you won’t get an electric shock.
5. Water will turn into steam if you boil it. (对画线部分提问)
______ ______ happen if you boil water?

答案： 1. If, don't 2. Unless, has 3. will, if 4. Unless you 5. What will

Ⅲ. Combine the two sentences with the given word.
1. We get up at 5 o’clock. We will catch the early train. (if)______
2. You book a table in advance. You can’t have a meal in this restaurant. (unless)______
3. He will make progress. He works harder. (as long as)______

答案： 1. If we get up at 5 o'clock, we will catch the early train. 2. You can't have a meal in this restaurant unless you book a table in advance. 3. As long as he works harder, he will make progress.

Ⅳ. Complete the sentences with the correct tense.
1. If it ______(rain) tomorrow, we ______(play) basketball indoors.
2. The plant ______(die) unless I ______(water) it every day.
3. As long as you ______(listen) carefully, you ______(understand) the text.
4. Unless there ______(be) a rain, the wildfire ______(not be) put out.

答案： 1. rains, will play 2. will die, water 3. listen, will understand 4. is, won't be