He has been interested in flying （ever since he took his first flight）对括号部分提问However,this message was nver heard by the public（改成主动语态）They collected many rock samples （to take back to Earth for further research）

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He has been interested in flying （ever since he took his first flight）对括号部分提问However,this message was nver heard by the public（改成主动语态）They collected many rock samples （to take back to Earth for further research）

He has been interested in flying （ever since he took his first flight）对括号部分提问However,this message was nver heard by the public（改成主动语态）They collected many rock samples （to take back to Earth for further research）
He has been interested in flying （ever since he took his first flight）对括号部分提问
However,this message was nver heard by the public（改成主动语态）
They collected many rock samples （to take back to Earth for further research）对括号部分提问
They were trying to warn Armstrong and Aldrin( to stay away)对括号部分提问

He has been interested in flying （ever since he took his first flight）对括号部分提问However,this message was nver heard by the public（改成主动语态）They collected many rock samples （to take back to Earth for further research）
1.How long has he been interested in flying?
2.However,teh public never heard the message.
3.What did they collect many rock stamples to do?
4.What were they trying to warn Armstrong and Aldrin to do?

not only he but also his father ( ) to many places of interest smee they came herehave been have gone has been has gone so far同义词So far,he has been to many places of interest in China.(改为同义句), long has he been away? He has never been abroad,has he?怎么翻译 he has been to beijing.什么时态? 翻译: He has been dozens of times. he has been there _twice____.画线提问 he has been in english since last He has been here ___since yesterday.___ He has never been there.英译汉 He has not been back yet He has been( )(die) fou two days. He has been abroad many times. He think he has been to shanghai ,does he. He has been to the Great Wall中为什么been He has never been abroad before.这里的been是什么 为什么he has never been to London,has he?为什么后面用has he? 请教一个句子的意思：Interest in this area has been extremely high of late.