3)復雜句：

　　賓語從句：

　　表述觀點：

　　認為： insist, maintain, hold, suggest, argue,

　　支持：favor, propose, support, agree, advocate,

　　(be for, be in favor of)

　　反對：object, oppose

　　(be against)

　　Some people do believe that

　　Some people are fully convinced that

　　Some people assert that

　　Some people deem that

　　Some people argue that

　　Some people claim that

　　Some people doubt that

　　Some people deny that

　　What 引導的

　　What I learn

　　What I see

　　What I need

　　主語從句：

　　1. It is suggested in the graph that…(indicate, demonstrate, illustrate)

　　It is reported that/estimated that/proved

　　It is well-known/generally accepted/universally acknowledged

　　2. Whether S +V is a controversial issue.

　　Whether we should make effort to/endeavour to preserve endangered species is …

　　Whether we should do…depends on whether S +V

　　Whether we will succeed depends on whether we persist.

　　3. What we should do is to do….

　　We should protect animals.

　　What we should pay attention to/ emphasize/stress is to do

　　What teachers should emphasize is to tell students to practice more.

　　What we are faced with is that …

　　What we are confronted by is…

　　the depletion of natural resources

　　What we should solve immediately is that…

　　What concerns us most is…

　　What we am concerned with

　　主語從句：it is …

　　It is important/vital/crucial/pivotal/essential/significant(… 很重要)

　　It is clear/evident/obvious/manifest/as clear as crystal/quite common(。。。 很明顯)

　　It is undoubted/undeniable/doubtless (。。。 毋庸置疑)

　　It is a pity/a shame/a common sense/practice( 這是個常識)

　　It is well/increasingly/widely/commonly/generally known/recognized/accepted/acknowledged (眾所周知)

　　It is conceivable that 可想而知

　　It is desirable/admirable that 可取的

　　It is advisable that 最好做某事

　　It is probable/possible/likely that 可能的

　　It is imperative that 必要的

　　it is preferable/profitable that

　　It is hazardous/risky/perilous that 危險的

　　It must be stressed out that 必須要指出

　　It must be admitted that 必須要承認

　　It is reported that 據(jù)報道

　　It is suggested that 有人建議

　　It is assumed that 有人認為

　　It is estimated that 據(jù)估計

　　It is always the case that 情況總是這樣的

　　It is not always the case that 情況不一定總是這樣的

　　It follows that由此可見，