《2025年成才之路高中新课程学习指导高中英语必修第三册人教版》

2. This is because people believe in the importance of carrying on space exploration despite the huge risks. (P41)
这是因为人们坚信太空探索的重要性，哪怕面临巨大的风险。
句型剖析
This/That/It is because... 句型
(2024·北京卷) It is because the author had acquired the collaborating skills by working with others there so that the adviser considered the author's experience in the lab a groundbreaking success.
这是因为作者通过与他人合作获得了合作技能，因此顾问认为作者在实验室的经历是一个突破性的成功。
From space, the Earth looks blue. This is because about seventy - one percent of its surface is covered by water.
从太空中看，地球是蓝色的。这是因为地球表面约百分之七十一都被水覆盖着。
联想拓展
(1) This/That is because... 意为“这/那是因为……”，其中 because 引导表语从句，从句表示原因。
(2) This/That is why... 意为“这/那就是……的原因”，其中 why 引导表语从句，从句表示结果。
(3) The reason why... is that... 意为“……的原因是……”，其中 why 引导定语从句，并在从句中作状语。that 引导表语从句，从句表示原因。
(4) The reason that/which... is that... 意为“……的原因是……”，其中 that/which 引导定语从句并在从句中作主语或宾语，第二个 that 引导表语从句，从句表示原因。
即学即用
句型转换
①Peter was late for the class because he was stuck in a traffic jam.
→Peter was late for the class and he was stuck in a traffic jam.
→Peter was stuck in a traffic jam and he was late for the class.
→ Peter was late for the class he was stuck in a traffic jam.
翻译句子
②简今天不想去野餐的原因是天气不佳。The reason why Jane wouldn't like to go on a picnic today is that the weather is not good.

③这就是他缺席比赛的原因。This is why he was absent from the competition.

答案： 2.①that was because that was why The reason why was that
②The reason why Jane wouldn't like to go on a picnic today is that the weather is not good. ③This is why he was absent from the competition.