1.it is about 600 years ago __ the frist clock was made.(that until when since)2.it was eight'clock ___ he came to school.it was at eight ___ he came to school.(that before since when )

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/28 19:51:14

1.it is about 600 years ago __ the frist clock was made.(that until when since)2.it was eight'clock ___ he came to school.it was at eight ___ he came to school.(that before since when )
1.it is about 600 years ago __ the frist clock was made.(that until when since)
2.it was eight'clock ___ he came to school.
it was at eight ___ he came to school.(that before since when )

1.it is about 600 years ago __ the frist clock was made.(that until when since)2.it was eight'clock ___ he came to school.it was at eight ___ he came to school.(that before since when )
that , when , that
第一个跟第三个都是强调句,it is/was ...that
第二个是时间状语从句

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