1. cause-suggestion (几乎不常用)

　　since / now that ...; I hope that...

　　because of/on account of/owing to/thanks to + (doing) sth, I hope that...

　　2. cause-effect (较常用)

　　XXX lead to / bring about / result in/ account for ...

　　(一个句子), therefore / thus / hence / as a result / consequently / (and) so ...

　　3. effect-cause (较常用)

　　XXX be caused by / result from / be the result of / be the effect of / be the consequence of ...

　　(一个句子), because ...

　　it is adj. that ...

　　it is unimaginable that ...

　　it is undeniable that ...

　　it is interesting to discover that ...