presumptuous狂妄无礼

把师道尊严用一句假设说尽，逗趣又带刺。

If you knew, you'd be ...

回敬别人自以为是、或开玩笑压对方一头时用；正式场合别用。

If you knew that, you'd be the one teaching me. ／ Then you'd be telling me, not the other way round.

口语

重读 knew 和 teaching，两个 teaching 之间稍停。

If you knew the answer, you'd be the one explaining it to me. 你要是知道答案，就该是你讲给我听。

用一本正经的官腔压学生，presumptuous 一词把威严拉满。

It is presumptuous (and rude) to do ...

讽刺地指出对方越界、放肆时可用；平时对长辈别这样讲。

It is rude to speak over your teacher. ／ It is presumptuous to assume you know better.

正式

presumptuous 重音在 -sump-，句末 Is that clear? 上扬。

It is presumptuous to answer for someone else. 替别人做回答，是很放肆的。

先给足危险感，再用三个词收尾，像警报一样短促有力。

It's ... stuff. Blows you up.

夸张地形容某物很危险时可用；对陌生人别拿爆炸开玩笑。

This stuff is dangerous and can blow you up. ／ Mix it wrong and it goes up.

口语

horrible, dangerous 连读，Blows you up 重读 blows。

Handle it carefully; this stuff blows up. 小心操作，这东西会炸。

一句就把复杂工序的核心点破，the trick is 是教科书式的实用句。

The trick is to ...

教别人做事的窍门、或点出关键步骤时用；闲聊抱怨时别套。

The secret is to add them evenly. ／ The key is to keep the amounts equal.

中性

trick is to 连读，pour them in in equal 里两个 in 要分开。

The trick is to keep the dough cool. 诀窍是让面团保持低温。

用一句反问加期待，把祖父的偏心与信心都讲出来了。

I'm counting on you to ...

半开玩笑地表达对某人的高期待时用；对上级或客人慎用。

I'm expecting you to get all of them. ／ I'm relying on you for the lot.

口语

counting on 连读，all five 重读收尾。

I'm counting on you to bring home the trophy. 我指望你把奖杯带回来呢。

两句结构简单，却把规则和悬念一次说清，像游戏开场白。

Whoever does ..., wins ...

宣布比赛、抽奖规则时用；谈论严肃责任时不宜。

Whoever gets there first takes it. ／ The first to find them wins.

中性

finds them wins 三处 s 连读，prize 句尾放平。

Whoever answers first wins the voucher. 谁先答对谁拿走这张券。