Aron's arm was caught under
a 360-kilo rock that fell on him when he
was climbing by himself in the mountains.这个句子的when从句是修饰哪个动词啊，是fell还是caught啊另外caught怎么理解啊
...各位老师请教一道题：This is an interview about astronauts when they return to the Earth.请问：1. when引导的从句在句中做什么成分呢？2. 句子中return能否换成returned呢？原题return这里是一个填空，但是答案给的是原形return, 我觉得返回地球是...
请问：I was born to have the capacity to
conduct people, and therefore I am used to organizing.该句中conduct people怎么理解？查了好几个词典，但好像都对应不上（如果有哪位老师查到对应含义，烦请给个出处，谢谢）
...eased to meet you (= used to greet someone politely when you have just met them for the first time) 认识你很高兴“This is my niece, Sarah.” “Pleased to meet you.” “这是萨拉，我的外甥女。”“很高兴认识你。”(it was) nice meeting you (=used to say goodbye polit...