第一句话结构有问题
I consider (that) this is an unchangeable trhth.
我觉得这是一个不可改变的事实.
第二句话是正确的.
《用法》
consider作动词时主要有以下四种用法:
一、作"思考"、"考虑"(=think about)解,后面可接动名词、由"how,what等+动词不定式"或者从句作宾语.但要特别注意,consider后面不能直接跟动词不定式作宾语.例如:
①We are considering going to Hainan for the Spring Festival.我们在考虑赴海南过春节.
②He has never considered how to solve the problem.他从未考虑过如何解决那个问题.
③Do you consider that we can finish the project ahead of time?你认为我们能提前完成这个项目吗?
二、consider v.还可作"顾虑到"、"顾及"、"体谅"(=take into account)解.这时其后用名词或动名词作宾语.例如:
①All of you should consider the feelings of other people.你们必须顾及到他人的感情.
②Although he has made such a stupid mistake,you should consider his youth.尽管他犯了那样愚蠢的错误,你应该体谅他还年轻.
三、作"认为"、"以为"、"觉得"(=be of the opinion,regard as)解时,后面多接宾语从句,这时一般不接动名词作宾语.例如:
①I consider that he is fit for the position of the manager.我认为他胜任经理的位置.
②We consider that you are not to blame.我们认为这不是你的错.
③He has never considered the fact that his family is not very rich.他从未考虑过他家并不富裕这一事实.
consider作"认为"解时,后面还可以接一个宾语和一个动词不定式作宾语补足语,构成复合宾语结构,但这种结构的动词不定式主要是"to be+名词/形容词";有时也可以是其它不定式,不过这种不定式多用完成时.例如:
①We always consider him to be a weak leader.我们一直认为他是个能力不强的领导.
②They consider Jim (to be) the cleverest boy in their class.他们认为吉姆是他们班最聪明的学生.
③I consider her to have done wonderfully in the final exam.我认为她在期末考试中表现得非常出色.
注:consider作"认为"解时,后面偶尔也出现接不定式作宾语的情况,不过这时大都用形式宾语it,而将真正的宾语后移.例如:
Do you consider it wise to interfere?你觉得干预是明智的吗?
四、固定结构"consider...as/ to be+名词/形容词"多侧重于表示经过思考"认为……是……".例如:
①We consider his suggestion as having possibilities.我们认为他的建议具有可行性.
②They considered the plan as reasonable.他们认为这个计划是合理的
