PATTERNS1. happen to do ... when ...[原句展示] I happened to be upstairs at dusk when the window was open. (P2)[点拨] 句中的 happen to do ... when ... 为常用句式，意为“什么时候恰好发生什么事情”。如：She happened to be out when we called. [仿写] ________________________________（当门铃响时我碰巧在洗澡。）2. It be the first (second / third ...) time ... (that)...[原句展示] ...; it was the first time in a year and a half that I’d seen the night face to face ... (P2)[点拨] It be the first (second / third ...) time ... (that) ... 是一个固定句型，意为“是第一（二 / 三……）次……”。该句型中的 that 从句用完成时态。如果主句谓语是一般现在时，后面从句用现在完成时态；如果主句是一般过去时，后面从句则用过去完成时态，该结构中的 that 可以省去。如：It is the first time I have been here.[比较] It is high time (time / about time) (that) + 主语 + did + 其它。该句型中 that 从句常用过去时，译为“是（正是）……的时候”。如：It is high time that we went home.[仿写] ________________________________（这是我第一次来这个美丽的山村。）3. It be + no + 名词 + doing ...[原句展示] It’s no pleasure looking through these any longer because nature is one thing that really must be experienced. (P2)[点拨] It be + no + 名词 + doing ...是一个常用句型。可以把 It 看作形式主语，doing ... 是真正的主语。常见的句型有： It be (no) fun / use / good ... doing ...。如：It is no good doing what you dislike. [仿写] ________________________________（做错事后悔是没有用的。）PATTERNS:1. I happened to be taking a bath when the doorbell rang.2. It is the first time that I have been to this beautiful mountain village.3. It is no use regretting after you make mistakes.用心 爱心 专心1用心 爱心 专心2
