雅思写作原因句式
A为原因，B为结果
noun指名词或名词性短语
so/therefore
A, so B.
A. Therefore, B
therefore = thus, hence, as a result, inconsequence, for this reason
as/since/because
because of + noun
because of = owing to, due to, as a result of, thanks to
- owe B to A 把B归咎于A
- A (can) be owed to B B可以被归咎于A
the reason/cause is …
the reason why B is A (sentence)
the reason/cause for noun is … (noun)
A(noun) causes B(noun)
cause = lead to, result in, give rise to, be responsible for, contribute to, trigger
cause … to do …
The aggravating of air pollution has caused the incident of asthma to increse.
B is caused by A
be caused by = result from, be the result of, originate from, stem from, derive from, be derived from, be attributed to, arise from
derive *v.*从 … 衍生出；起源于；来自；（从 … 中）得到，获得
derive（衍生，起源） from = be caused by;
be derived（获得，得到） from = be caused by
which causes/causing … （跟结果）
which is caused by/caused by … （跟原因）
…, which means that …
with noun
with … doing/done（既可以做原因，又可以做结果）
A, so that B. B是想要达成的结果（目的性）
A, so as to do sth.
(in order) to do