We cannot use the present perfect conditional.

我们不能使用现在完成条件句。

In second conditional sentences, the continuous form of the present conditional can be used.

在第二类条件句中，可以使用现在时条件句的进行式。

So to create the first one we need the past perfect in the 'if' clause and the present conditional in the main clause.

想要造第一种句子的话，“if”从句中我们需要过去完成时，主句中使用现在条件句。

These are all quite simple tenses, but we could be using more complex ones like present perfect, present perfect continuous, conditionals, and these show off a wider range of grammar, especially when we use them accurately.

这些都是相当简单的时态，但我们可以使用更复杂的时态，比如现在完成时、现在完成进行时、条件句，这些都展示了更广泛的语法，尤其是当我们准确地使用它们时。