（关于so／not用于代替从句参见第347节。）

A %26mdash;Will it be expensive？

%26mdash;I should／would think so．／I should think it would．I shouldn%26rsquo;t think it would．／I shouldn%26rsquo;t／wouldn%26rsquo;t think so．／I should／would think not．

%26mdash;这个会很贵吗？

%26mdash;我想是的。／我想不。

回答这一类问题时，回答人暗示他并不确实知道，只是凭印象而言。 I should／would think 表示的语气没有I think那么肯定。

should／would think引导一个附加评论时，一般不能用so／ not。这时必须使用that从句：

%26mdash;He%26rsquo;s an astrologer， looking for work．

%26mdash;I shouldn%26rsquo;t／wouldn%26rsquo;t think that he%26rsquo;d find it easy to get work．

%26mdash;他是一个星相家，正在找工作。

%26mdash;我想他大概不会感到找到一份工作是容易的。

B 如果评论发生在过去的动作，可以用should／would have thought：

%26mdash;He actually got a job as an astrologer．

%26mdash;I shouldn%26rsquo;t／wouldn%26rsquo;t have thought that it was possibe to do that．

%26mdash;他真的以星相家的身份找了一份工作。

%26mdash;我本来认为那是不可能的。

C should／would have expected＋不定式结构／that从句也是可行的。有时非人称代词you可代替I：

%26mdash;She has emigrated．

%26mdash;Has she？ You%26rsquo;d／I%26rsquo;d have expected her to stay in this country．

%26mdash;她移居国外了。

%26mdash;是吗？人们／我还以为她会留在国内的。