4. While I was watching a soap opera, the telephone rang.(对画线部分提问)

_________ _________the telephone ring?

3. The dog got out of the box while Mary was drinking coffee.(对画线部分提问)

_________ _________ while Mary was drinking coffee?

2. I was talking to the reporter when the alien came out of the restaurant.(改为一般疑问句)

_________ _________ talking to the reporter when the alien came out of the restaurant?

1. I called the TV station while the alien was eating pizza. (改为否定句)

I_________ _________the TV station while the alien was eating pizza.

6.Many astronauts have already visited the space station.

5.The spacecraft has just reached the moon.　

4.They haven’t been to Mars yet.　我们在学现在完成时的时候,经常会出现already,just,yet这三个词,它们在句中的位置分别是already,just放在have/has与过去分词之间,yet放在句末。其意分别为“已经,刚刚,还”。　

3.Scientists haven’t found life on other planets.　现在完成时的否定式是在have/has后直接加上not。　

2.I heard of the news about the space travel.　hear of的同义短语为hear about。　

1.He has gone to Shanghai.　现在完成时的结构是“S+have/has+P.P ”,本句主语为第三人称单数,而go的过去分词是gone。