They know they are contributing very little of real value and all the time they live in fear of being exposed as cheats. being也有加形容词，也有加过去分词，这里的exposed都有形容词和过去分词意思，该怎么区分？
It's
unclear with the short time between setting up committees and negotiating staff
arrangements in the narrowly split chamber what that would mean for how quickly
confirmation hearings and floor votes can happen with just two weeks before the
inauguration.这个it形式主语，what that would mea...
According to the report，animals used in experiments are commonly subjected to force feeding and the infliction of burns and wounds to study the healing process.最后的不定式，是人去研究，但是却没有出现人这个主语，这个句子是不是错的？
请问老师as I have lived to see practised since是什么意思，不理解。since是副词放句末？那么see practised这里什么成分？practised形容词吗？搞不懂这个成分We had no such thing as printed newspapers in those days to spread
rumours of things, and to improve them by ...
One winter morning in 1945, I got home after my deliveries to find a boy of my age at my doorstep.问：句中to find a boy of my age at my doorstep.是不定式作什么句子成分？根据语义它应该是表示一种动作的“承接”吧？请老师说明一个这个不定式的用法？
The
emperor loved the princess so much and was so sad when she died that he ordered the palace to
be built in her honor.请问整个句子如何划分成分？and后面是不是省略了主语？
that后面是什么从句呢？非常感谢老师！
Some customers,
while acknowledging the change, have expressed empathy for couriers.A resident
surnamed Guo in Zhangzhou, Fujian province, said she recently began receiving
phone calls from couriers notifying her of the arrival of her parcels.老师，这里的notifying her of
the arrival of her par...
...rthrates settle below replacement level，but usually that
means somewhere in the neighborhood of 1.5 children per woman.问1: settle句子里成分和翻译，below…理解?问2: see有遭受的意思，这里是看见还是遭受？问3: usually修饰谁?帮忙直译一下句子!