问题 系表结构一些问题

老师好，有以下问题想请教一下。1. I managed to get through the game and the pain was worth it in the end.请问was worth it是不是错了，主系表应该是was worth。那这个it又代表什么呢？2. His first book to be published next month is based on a true story.其中be base...

问题 too...to和so...that...

The shoes are too small to wear.The shoes are so small that I can't wear them.为什么too...to中wear后面不需要再加宾语了呢

问题 help sb do sth的被动语态必须加to吗

主动语态的 help sb (to) do sth 的 to 是可有可无的。而 help sb do sth 的被动语态是不是必须要加上 to 呢？（省略就算错吗）

问题 主补加不加 to be 有什么区别

His cookbooks are generally considered to be a good value for money.这样的句子是不是可以去掉to be?   His cookbooks are generally considered a good value for money. " to be"有种还没发生的感觉,和"常被认为" 不会有些矛...

问题 seem to ..that.. 这样的句式还是表语从句吗

（1）It seems to me that she complains of a headache. （2）It seems to be true that we are the same age.  感觉它和it seems that不一样，有了to后主句挺完整了，此时that从句是否可以看作是主语从句了？

问题 make change in / to / for 有什么区别？

He’s always making changes in his plans to do things. 1.in his change to do things成分是什么？不定式做plans的定语，in his plans又做changes的定语吗？ 2.make change in 和make change to/ for 有什么不同？

话题 this was going to be a big day Vs there was going to be a big day

问题 复杂句与非谓语的转换

Since i know that you are fond of classical music, i'd like to invite you to join me and welcome you to show your performance.请问老师们,这句话用非谓语转化时, 到底用下面哪一种呢? 表原因都习惯用 Having done 吗?  Knowing that you are fond of classical...

问题 without exception to my knowledge是什么意思

And as discussion of language acquisition becomes more substantive, it moves to assumptions about the language organ that are more rich and domain specific, without exception to my knowledge.请问：without exception to my knowledge是什么意思？

问题 sure of doing../ sure to do...成分问题

请问老师，以下搭配中of doing sth 和 to do sth分别做什么成分？： be sure of dong sthbe sure to do sthmake sure of dong sthmake sure to do sth      

问题 with/to/for 作“对于..”时，有什么不同？

He's a bit short for a basketball player.To him it's really a great blow.With those who don't hope to make any progress,it's the same.这三个例句的with/to/for... 都是“对于..”的意思，它们有什么区别？可以互换使用吗？？

问题 to have done和having done的区别

Whether there is something very special about the Earth to have fostered the variety of life forms.这里的to have fostered是something 的定语吗？如果用having fostered 和用to have fostered的区别在哪？不定式比现在分词突出是一次性/具体事件？

问题 yield to的意思与用法

Even the recalcitrant car-crash simulations, he thinks, will yield to the new approach soon.他认为，即便是顽固的汽车碰撞模拟问题不久也会出现新的解决方法。我认为这个 yield to 是屈服于的意思，对么？

问题 be off to是固定搭配吗

I'm afraid that this school year is off to a shaky start.be off to是固定搭配吗？off是副词吗？

问题 enough...to...这种属于哪一类不定式

enough...to...这种属于哪一类不定式? 如：Is there enough lunch for everyone to have a picnic together ?