各位大神帮帮忙啊!单句改错题,说明错的原因并改正.非常感谢!

各位大神帮帮忙啊!单句改错题,说明错的原因并改正.非常感谢!
15. When I was in the trouble , he was always the first offer help . 16. You are sure to have a wonderful time in the party .
17. The museum was built in the memory of the famous artist . 18. Only on this way can you solve the problem .
19. What will happen if you don’t have balanced diet ?
20. Have you heard the news which the price of gas will rise ? 21. It’s a pity that the man standing over there is heavy in debt . 22. I think it is wrong for you to stare at others .
23. We’ll remember the year 2008 when saw the great success of the Olympics . 24. Hardly had he sat down than the film began .
25. Seeing from the spaceship , the earth is like a huge water globe .

15.When I was in 【去掉the】 trouble ,he was always the first 【加上to】offer help .
in trouble "处于困境",不需要冠词的.
the+序数词+to do sth.:不定式作定语,修饰the+序数词,"第几个做某事的人"
句意：当我处于困境时,他总是第一个向我提供帮助.
16.You are sure to have a wonderful time 【in--at】 the party .
"在晚会上",一般说成:at the party .
句意:你肯定能在晚会上玩个痛快.
17.The museum was built in 【去掉the】 memory of the famous artist .
in memory of固定短语,"为了纪念"
句意:这个博物馆是为了纪念那位著名画家而建的.
18.Only【on--in】this way can you solve the problem .
in this way 用这种方式
句意:只有这样才能解决这个问题.
19.What will happen if you don’t have【加上a】balanced diet
diet为可数名词单数,因此要加a .
句意：如果你没有平衡饮食,情况会怎样?
20.Have you heard the news 【which--that】 the price of gas will rise
that引导同位语从句,说明the news的内容是什么.
句意:你听到了油价会上涨的那条新闻吗?
21.It’s a pity that the man standing over there is 【heavy--heavily】 in debt .
heavily是副词作状语.be heavily in debt 欠了很多债/负债累累.
句意:令人遗憾的是站在那边的那个人负债累累.
22.I think it is wrong【for--of】you to stare at others .
在it is+形容词+for/of+sb.+to do sth.结构中,如形容词为wrong,nice,kind,foolish等
用来说明sb.的性格或状态的词,则用of,不能用for.
句意：我认为你盯着别人看是不对的.
23.We’ll remember the year 2008 【when--that/which】 saw the great success of the Olympics .
that/which引导定语从句,修饰the year 2008; that/which在定从中作主语 .
因为此定从中缺少主语.而when是副词,不能作主语,故要改成that/which.
句意:我们会记住见证了奥运会伟大成功的2008年.
24.Hardly had he sat down 【than--when】 the film began .
Hardly had sb.done sth.when ...:这是固定句型,"某人刚做某事就..."
句意:他刚一坐下,电影就开始了.
25.【Seeing--Seen】 from the spaceship ,the earth is like a huge water globe .
此题考查分词作状语,其逻辑主语是the earth,与See之间是被动关系.
因此应用过去分词作状语,故Seeing改成Seen.
句意:从飞船上看,地球就像一个巨大的水球.