1. In fact, it is an artificial disaster. (x)
In fact, it is a man-made disaster. (√)
artificial和man-made这两个词都可表“人造的”，但很容易产生混淆。artificial所强调的是“由人造(非天然)的材料所形成的”，如:artificial flowers/pearls / limbs,即“人造花/珍珠/假肢”。另外，artificial 亦可表“由人力的干预所形成的”，如:artificial insemination / intelligence / respiration，即“人工授精僧能卿乎吸”。man-made强调的是“人类制造或人工开挖的”，如:a man-made lake，即指“一个人造湖”。
2. As other species of apes, this species does not eat meat.(x)
Like other species of apes, this species does not eat meat. (√)
as(像)作连词时，其后须接从句，如:As his wife does, Peter enjoys reading Chinese classics.就像他老婆一样，彼得也喜欢阅读中国的古典作品。) like是介词，其后接名词(词组)即可。
3. David talked as if an authority.(x)
David talked as if he were an authority.(√)
David talked like an authority.(√)
带有假设语气的 as if/though(好像)其后须接从句。like是介词，接名词(词组)即可.
4. Mr. Hopkins is, as it is, a walking dictionary.(x)
Mr. Hopkins is, as it were, a walking dictionary. (√)
as it is 表“依目前的状况”或“事实上”，往往用来与“过去的期望”对照，如:We hoped she might recover soon，but, as it is, her health is worsening.(我们本希望她能很快康复.可是事实上，她的病情却在恶化中。) as it were=so to speak是“打比方”的意思。如原句把人比喻成了字典，但人毕竟不是字典。
5. Since today, everyone will be required to wear a mask at work.(x)
As of / from today, everyone will be required to wear a mask at work. (√)
since 表“自从”时，接一个过去的时间或事件，且主句只能搭配现在完成时，如:It hasn't rained since the beginning of this month.(自从这个月初以来，就没有下过雨。) as of /from通常接现在或将来的时间，表“今后”或“从未来某个时间以后”。
6. According to his will, his ash is to be scattered at sea.(x)
According to his will, his ashes are to be scattered at sea.(√)
ash作一般的“灰烬”解时，兼有可数和不可数的用法，如:Watch your cigarette ash! (注意你的烟灰!)或The house was burned to ashes.(这栋房子已被烧成灰烬.)但指“骨灰”时，要用复数形式ashes.
7. Being poor is nothing to be shameful of.(x)
Being poor is nothing to be ashamed of. (√)
shameful意为“可耻的”，通常指“行为”。be / feel ashamed of sb / sth是“以某人/事为耻”。shameless则为“无耻的”，通常指人，如:That shameless person should be ashamed of his shameful behavior.(那个无耻的人真应该以自己的可耻行为感到羞耻。)
8. I was so tired that I fell sleepy amid the speech.(x)
I was so tired that I fell asleep amid the speech.(√)
feel (felt、felt) sleepy是感到“很想睡觉”的意思，如:As soon as the old man sat in his armchair, he felt sleepy.(这个老人一坐到扶椅上就觉捌良想睡觉。)fall (fell, fell) asleep=begin to sleep，是“睡着”的意思。
9. The baby is asleep soundly.(x)
The baby is sound asleep. (√)
“睡得很熟”可以表达为:(1) sleep soundly(其中sleep是动词);(2) be sound / fast asleep(其中asleep是形容词)。
10. We all enjoy delicious food, but we often forget the healthy aspect.(x)
We all enjoy delicious food, but we often forget the health aspect (√)
the health / safety / security aspect 指“健康/安全的一面”，为固定用法。另外healthy通常用来形容人或动物的健康。