一般过去时考点
表在过去某个特定时间发生且完成的动作，或过去习惯性动作，不强调对现在的影响，只说明过去。常与明确的过去时间状语连用，如：yesterday,
last week, in 1945, at that time, once, during the war, before, a few days ago, when。
考点一：used to + do 表示过去经常但现在已不再维持的习惯动作。to为不定式符号，后接动词原形。
比较：be / become / get used to + doing 表示习惯于
He used to smoke a lot. He has got used to getting up early.
考点二：在时间和条件状语从句中，代替过去将来时。
He promised to buy me a computer if he got a raise.
