1.Not until...：当引导的时间状语从句时，如果not until置于句首，主句用部分倒装。例如：Not until he spoke had I realized he was American.（他要不说话我还一直不知道他是美国人。）

2.spell [spel]

n. 一段时间,符咒,魅力
v. (spelt,spelt) 拼,拼写,拼成

例句与用法:
Could you spell that word out for me again?
那个字你再拼一遍好吗？
The witch put the princess under a spell, and she fell asleep for ten years.
这女巫使公主中了巫术，沉睡了十年。

3.pale [peil]

n. 尖木桩(前哨)
adj. 苍白的
v. 使苍白
vi. 变得苍白,变得暗淡

例句与用法:
She paled with shock at the news.
她听到那消息大惊失色。
You are looking rather pale, are you ill?
你的脸色有些苍白，你生病了吗？

4.seem [si:m]

v. 像是,似乎

例句与用法:
The children seem unaffected emotionally by their parent's divorce.
孩子在情绪上似乎未受到父母离婚的影响。
He seems to know everything.
他似乎什么都懂。
He seems an energetic person.
他似乎是一个精力充沛的人。