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我。
In case (that) John comes/should come, please tell him to wait.
Please take your umbrella in case (that it rains/should rain).带上雨伞，以防下雨。
句型11
It强调句型
强调句的基本构成：It is/was + 被强调的部分 + who（主要指人时）/that + 其余部分 [注意1] 这种结构可以强调句子的主语、宾语、状语（包括时间，地点，方式，原因等），但是不能强调谓语动词（参考句型15）。 原句的谓语动词如果是现在或将来时态，用It is…that/who….；
原句的谓语动词如果是过去时态，用It was…that/who….； 强调时间、地点、原因或方式时不要用when, where或how, 必须用that。 [例句1]
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I saw him in the street yesterday afternoon. →It was I who saw him in the street yesterday afternoon.（强调主语）
→It was in the street that I saw him yesterday afternoon.（强调地点状语）
→It was yesterday afternoon that I saw him in the street.（强调时间状语）
→It was him that/who I saw in the street yesterday afternoon.（强调宾语） [例句2]
He didn’t go to bed until his mother came back.
→It was not until his mother came back that he went to bed.
He didn’t do his homework until his father came back from work.
→It wasn’t until his father came back from work that he did his homework. [例句3]
Only when you nearly lose someone do you fully realize how much you value him. →It is only when you nearly lose someone
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that you fully realize how much you value him.
只有你快要失去某个人时，你才意识到你是多么尊重他。 [例句4]
I was late again because the traffic was very heavy during the rush hour.
→It was because the traffic was very heavy during the rush hour that I was late again.
（强调句中只能强调由because引导的原因状语从句，because不能换成since, as, for, now that等）
[注意2]强调句的疑问结构
一般疑问句 Is / Was it +被强调部分 +who / that …?
特殊疑问句 特殊疑问词+is /was +it +who /
that…? What is/was it that…? Who is/was it that…? When is/was it that…?
Where is/was it that…? Why is/was it that…? How is/was it that…?
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[例句1]
I saw him in the street yesterday afternoon. →When was it that you saw him in the street?
→Who was it that you saw in the street yesterday afternoon?
→Where was it that you saw him yesterday afternoon? [例句2]
I don’t know when he will come back.
→I don’t know when it is that he will come back.（宾语从句疑问词后用陈述句语序） –How was it that you got in touch with Mr. Smith? 你是怎么和Smith先生联系上的？
–Trough a friend of mine. 通过一个朋友。 句型12
（1）、祈使句（表条件）+ or/or else/ otherwise + 主句（表结果）… “否则…，要不然…” （2）、祈使句（表条件）+ and +主句（表结果）
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