动词不定式的完成式
示例：
Maria was sorry to have missed you for her wedding party.
你没有来参加玛丽亚的婚礼，她感到十分遗憾... have (got) to表示义务
示例：
I’ve got to go now. It’s getting dark.
我得走了。天已入黑了。
have (got) to用于... what 和that、which比较：
示例：
What I need now is to lie down and have a good rest.
我现在需要的是躺下来，好好地休... as well as
示例：
The mother as well as her two daughters was taken to hospital.
这位母亲连同她的两个女儿一起... 简练的表达法
示例：
The company was almost bankrupt.
这家公司几乎破产。
在学到不少词汇、短语和句型后，切忌自诩博学，遣词造句进拖泥带水，叠床... 从句中的时态简化
示例：
Joan’ll probably be on the same train for Lancaster as I am tomorrow.
琼有可能明天和我乘... whether或if的选择
示例：
Margaret and I discussed whether we would accept the offer.
我和玛格丽特商议过我们是否要... 省略亦要保持结构的完整
示例：
Timmy is to be the first choice, and Michael and Paul are to be the second and... too的修饰语
示例：
You’re going a bit too fast. Slow down!
你走得稍快了一点儿，走慢些吧!
much, a lot, far, a... as, when, while表示同时
示例：
Please keep quiet when I am speaking.
我在发言时，请大家保持安静。
当甲事正在进行时，同时... | 
