je04tta

这题难道不是在考if...then...结构么？
if present, then future....

je04tta

引用nn的回答
“i think on this type of question you really just need to figure out what makes sense - is the future event intended to be conditional, or is it intended to be something definite? some of this will depend on the perspective of the reader. i think both of the following make sense:

company X announced that its profits would increase
(either it never happened when expected, or we are still waiting but not sure it will happen)

company X announced that its profits will increase
(we are still waiting for it to happen and fairly certain it will)  ”

然后发问者又说MANHATTAN书上写了，avoid mixing Present tense with Conditional tense. Likewise, avoid mixing Past tense with Future tense.

nn的回答是

It doesn't say to never mix past and future tenses, but avoid doing so.
The problem with the English language is that there will (almost) always be exceptions to anything that we report as a firm rule. I would say this is more of an idiom than anything else and deals with the main verbs- announce vs believe.......