In thinking about the evolution of memory together with all its possible aspects, it is helpful to consider what would happen if memories failed to fade.

在考虑记忆的进化及其所有可能的方面时，思考一下如果记忆不会消失会产生什么结果是很有用处的。 【析句】本句的主干是it is helpful to do sth.，真正的主语是to consider这个不定式，当然它里面还包含了一个带条件从句的宾语从句。逗号前面的是一个状语。

youdao

I kept using relative pronouns like "who did this," "which this," and using ing-words,participles, because that's what you use in the Greek to string along clause after clause after clause.

我却要使用关系代词，“谁做这“，“这是“,使用现在分词，分词，因为希腊语就是用这种方法,连接一个又一个从句。

youdao

What he did disappointed us all.

他所做的一切使我们很失望。（主语从句）

youdao

What he means is what he says in the following clauses.

他的意思是他在下面这个从句中所说的东西。

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