【itisthat强调句用法】在英语语法中，“It is that”结构是一种常见的强调句型，用于突出句子中的某一部分，如时间、地点、人物、原因等。这种句式常用于书面语或正式场合，以增强表达的语气和重点。
一、
“It is that”强调句是一种通过将句子的某个成分提前到句首，以加强其重要性的结构。它通常由“It is/was + 被强调部分 + that/who + 其余部分”构成。这种句式可以强调主语、宾语、状语等成分，尤其在描述特定事件或情况时非常有用。
使用该句型时需要注意以下几点：
1. 强调主语：当强调的是主语时，通常使用“that”，如果主语是人，也可以用“who”。
2. 强调宾语：强调宾语时，一般使用“that”。
3. 强调时间、地点、方式等：这些状语成分通常用“that”来引导。
4. 时态变化：根据句子的时间，可以使用“is”或“was”进行时态调整。
二、表格展示
| 强调内容 | 句子结构 | 例句 | 说明 |
| 主语 | It is that + 主语 + 动词... | It is Tom who called me. | 强调主语“Tom” |
| 宾语 | It is the book that I bought. | It is the book that I bought. | 强调宾语“the book” |
| 时间 | It was yesterday that he arrived. | It was last week that we met. | 强调时间“yesterday / last week” |
| 地点 | It is in the library that she studies. | It was at the station that I saw him. | 强调地点“in the library / at the station” |
| 原因 | It is because of the rain that we stayed home. | It was because of his mistake that the project failed. | 强调原因“because of the rain / his mistake” |
| 方式 | It is by train that they traveled. | It was with a pen that he wrote the letter. | 强调方式“by train / with a pen” |
三、注意事项
- “It is that”强调句不能用于强调谓语动词。
- 如果被强调的部分是人，可以用“who”代替“that”。
- 在口语中，有时会省略“that”，但正式写作中建议保留。
通过合理运用“It is that”强调句，可以使语言表达更加清晰、有力，也更符合英语母语者的表达习惯。掌握这一结构，有助于提升英语写作与口语表达的准确性与表现力。