根據(jù)我們統(tǒng)計，問題中除了問大意、中心思想的，60%以上是問細節(jié)的，而只要問細節(jié)，90%以上牽涉到原因，特點，功能，理由，事實，優(yōu)缺點等。而這些東西往往是用表示各種語義的過渡詞來引出的。
根據(jù)過渡詞表示的語義和邏輯關(guān)系，我們可以分類為：
1) 舉例
for example, for instance, as a case in point, as an illustration, such as, say, e.g.
2) 釋義
that is, that is to say, in other words, so to speak, or rather, namely
3) 原因
because, because of, for, as, owing to, thanks to, due to, now that, since, as a result of, attribute to, in that
4) 條件
if, unless, whether, provided that, given, as long as, on condition that, otherwise
5) 讓步
despite, in spite of, though, although, nevertheless, but, however, admittedly, it is true…but, after all
6) 結(jié)果
for this reason, therefore, consequently, accordingly, hence, as a result, thus, in short, in a word, to sum up, to conclude
7)比較
similarly, like, likewise, in the same way, much…, as much, no more…, than, just as… so
8)對照
whereas, instead, however, unlike, on the contrary, in contrast, on the other hand, while, some…, others
9)層進
first, in the first place, to begin with, second, next, in addition to, besides, moreover, furthermore, third, finally
10)強調(diào)
indeed, in fact, certainly, particularly, above all, most importantly, worst of all
11)目的
in order to, in an effort to, so as to, in order that, for fear that, in case, least
12)先后
shortly after, earlier, later, afterwards, after, before, once, meanwhile, since, until, when, while, the moment, as soon as
13)指示
this, that, these, this accounts for, this helps explain, that's why
