Hello Amelia, The meaning of the sentence : " It is necessary to get rid of that thing ( not mentioned in the sentence) that is believed to be true or to happen in order to be able to think about a new more useful relationship to the environment with the most positive effect." The structure analysis : You didn't punctuate the sentence . You need to do that in order to be able to analyze and distinguish the sentence clauses. " But it is precisely that assumption, which must now be discarded, so that we can think strategically about our new relationship to the environment." Already starting with "but" indicates that this part is not the main sentence, it is already a secondary clause. Assuming that the sentence starts with " It is precisely ..." So that makes it the main clause. " It is precisely that assumption " Subject , predicate , adverb , object including ( pronoun and noun) Second clause :( starting with a conjugation ) "which must now be discarded" conjugation , auxiliary verb , adverb , verb in passive voice) Another clause:( a causal one) " so that we can think strategically about our new relationship to the environment ." a causal conjugation , subject , predicate ( auxiliary verb + main verb), adverb, object consisting of :( preposition , pronoun , adjective , noun , preposition , definite article , noun )

yeah, it's indeed a long sentence. try dropping "which". makes sense, right? :)

Although I am also a chinese ,I think I am supposed to be able to answer your question.As the Maidhc said,it's a little bit impolite asking like "I want". Now the structure would be more clear,if I divide the whole sentence into several structures.But it is precisely that,asumption (which must now be discarded) ,so that,we can think strategically about our new relationship to the environment. The chinese meaning of the sentence would be "现在必须抛弃这种假设，以便我们可以从战略上思考（我们）与环境之间的新关系。so that 前面我认为实际成分只有一个assumption，没有主谓结构。

Try saying "I would like someone to analyze" instead of "I want"; that's rather rude.