It looks as if children were a lot better off in 2001 than they were in 2002上面句子里的“off”怎么理解？

it looks as if she 's it looks as if it is going to rain It looks as if cold.这句话对吗? “似乎要下雨了”应该用 it seems as if 还是it looks as if 为什么it seems as if=it looked as if而不是looks为什么是looked不是looks It looks as if/as though it’s going to rain这句话是什么意思? 英语翻译It looks as if it's going yo rain.刚刚打错了It looks as if it's going to rain. It looks ___it is going to rain.A as if B like C as D that It looks as if it is going to rain.后面不该用was going it looks as if it'll go under soon 求翻译~急|! it looks as if it is raining什么意思原题What's the weather like today?It's cloudy._________.A.It looks like rain.B.It looks as if it is raining.选A不选B,why? It ___that he has been ill for a long timeA.seems B.looks C.looks as if D.seems as if 该选哪一个啊,理由是什么呢? It __that he has been ill for a long time.a.seems b.looks c.looks as if d.seems as if It looks _____ it were going to rainA that B as if C even if D like It looks as if it___ rain.going to 请问这是对什么时候的虚拟? It ______ that Mary has given up _____. A.looks as if ,smoking B.seems ,smoking It looks as if/though we'll have to take taxi. （高二英语）关于“it looks as if ...的用法?比如说：It looks as if a storm is going to come soon .“it looks as if .”这个结构中 it 代表的是什么呢?为什么不说成“a storm looks as if is going to come soon ”呢?