解释下这道英语题的答案原因（8年级）

Question

加粗为下划线上的答案内容The teacher asked me,"Have you finished your maths homework?'(合并句子）The teacher asked me  (if/whether) I (had) finished my maths homework. 有能力的，再帮忙解释下题原因。The boy was too excited to sleep well last night.(保持原句意思）The boy was （so) excited that he (couldn't) sleep last night.

Answer 1

1、The teacher asked me whether had finished my maths homework。
if 一般位于句首，句中一般用as if ，排除法。
2、原句The boy was too excited to sleep well last night。意思是这个男孩太兴奋了，（导致）昨晚睡得不好。 The boy was （so) excited that he (couldn't) sleep last night. 翻译是：这个男孩是如此的兴奋，以至于他昨晚不能睡觉。 so在这是副词，表如此的怎样怎样，that在这表引导状语从句,表示目的或结果，翻译成以至于怎样怎样...