下面这句话是否存在语法问题？
没有语法问题。
The films reveal the extreme lengths animals go to survive.
电影揭示了动物为了生存所走的极端长度。
主语The films，谓语reveal，宾语the extreme lengths，animals go to survive是宾语补足语。
许多动词可以带“宾语+宾语补足语”的结构，如（make, name, let, force等），宾语补足语也有许多形式，如名词，不定式，形容词以及副词、介词短语等。 （1）Tom always makes his little sister cry. 汤姆总是招他妹妹哭。 （不带to的动词的不定式作宾语补足语） （2）The robber forced us to leave our house. 强盗强迫我们离开屋子。 （带to的动词不定式作宾语补足语） （3）Alice went out, having a basket on her back. 爱丽斯出去了，背上背着个筐。 （介词短语作宾语补足语） 8．as…as...的句型结构 as. ..as... 中第一个as是副词，第二个as 是连词，其基本用法如下： 如果我们要说两个东西在某方面是一样的，我们就可以用as…as…加一个原级形容词或副词。如： He drove as fast as he could. 他尽可能快开。 Call +宾语+宾语补足语 They called the baby Tom. 宾语从句 I. 宾语从句 即在复合句中作主句的（及物动词或介词）宾语。宾语从句通常由连接代词或 词引导；可分为四类： 1．由 that引导的宾语从句（that没有任何意义，在从句中不充当任何成分，在口语和非正式文体中常可以省略）： I thought （that）the food was rather expensive. Mother knows (that) Jim will work hard. 2. 由 if /whether“是否” 引导的宾语从句： I wonder if/whether it was Disney who made the first cartoons. Could you tell me if/whether Mr. Black lives here? 3. 由 what, why, when, where, who, which, whose, whom, how 等 wh- 类连接代词或副词引导的宾语从句： Can anyone fail to see what kind of show they are putting on? Please tell me which class you are in? He asked me whom I was waiting for. The stranger doesn’t know when the ship arrives. I didn’t understand why the boy had so many questions. Please ask the teacher how we get to the place. 4．由关系代词型what 等代词引导的宾语从句： We always mean what we say.
