An opportunity is something that, ____, by no means you will get back.An opportunity is something that, ____, by no means you will get back.A. if you lose B. when lose C. once lost D. after losing书上的答案是C，请问老师，为什么不选A？
They have fewer opportunities to learn the value of money, and have less experience in learning to deal with a delay in gratification, if every requested object is given on demand. 这句当中 in gratification 是“满足地”的意思吗，做副词用？还是 in 是“在....方面...
...ason, they asked the government to pass the law to protect the environment and keep the balance of nature. Now everything has changed. Birds are singing.老师们好，请问这道改错题中的Look into 改错 Looking into, 是不是和After looking into一个意思？自己有点拿不准。
1. She ran across the field after it, and fortunately was just in time to see it pop down a large rabbit-hole under the hedge.2. In another moment down went Alice after it, never once considering how in the world she was to get out again.老师，pop 在文中作动词使用吗? down go 还是 go do...
And it could boost synthetic biology, by speeding up the creation of human-designed proteins intended to catalyse chemical reactions.老师您好，请问这里的intended to …是分词短语做状语。又或者可以理解为省略了关系代词和be动词的定语从句。哪一种理解更...
...may be among the best of friends. It is the same today that it always was, and it will never change. It is the most patient and cheerful of companions. It does not turn its back upon us in times of adversity or distress. It always receives us with the same kindness; amusing and instructing us in you...
They maintain that private cars contribute to traffic congestion so greatly that the advantages gained in comfort and freedom are often cancelled out by the frustration caused by traffic jams.请问这个that the advantages的that是什么成分，谢谢老师。
But they have been
soaring in recent years, and adjusted
for inflation are at a 13-year
high, according to the International Coffee Organization.这句话的adjusted
for inflation是过去动词短语做状语吗？are 前面的主语是什么？but整个句子吗？
...applies to the Unabomber,whose manifesto ,published in 1995,scorns science and longs for return to a pretechnological utopia.同位语一旦判断就可以略读，所以双逗原则需要学习。可是多个逗号情况下，如何判断内容是同位语，是语法上有方法还是语义上分...
but the misfortune is, that they infect the minds, and influence the conduct even of our gentlemen; of those, I mean, who have every title to this appelllation but an exemption from prejudice, which, however, in my opinion, ought to be regarded as the characteristic mark of a gentlemen.横线句子...
I had, just a big event at my work, and so now I've got a lot on my plate to try to deal with the post-event stuff as well as things that I had put on the back burner.这是教美国语音的老师说的。上句中的as well as应该是not only...but also...的意思吧？而不是as well ...