? The change in …largely results from the fact that …
? There are several causes for this significant growth in …. First …, Second …, Finally … ? A number of factors could account for the development in … ? ? ? ? ?
5．用于论证和说明的句型
We may cite/quote/take a single/common example to illustrate … Our society abounds with the examples of … A recent study indicates/suggests/shows that …
According to the statistics provided by …, it can be seen that … There is good sufficient evidence to show that …
This brings out/set forth the important fact that … No one can ignore/overlook the fact that …
I can think of no better illustration of the idea/view than the fact that … It is very important/of great importance to do/that … Let’s take an example/some examples to illustrate …
Why are/do …? For one thing, … For another, …. And the primary reason is … B is chiefly responsible for …
The reasons for … are complicated. And probably they are found in the fact … We may look into every possible reason except the real one
It is no simple task to give the reason for this complicated phenomenon which involves many factors.
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