1、今天早上正是我在公园遇见了他。
It was i who/that met him in the park this morning.2、今天早上我在公园遇见的正是他。
It was him that i met in the park this morning.3、今天早上我正是在公园里遇见了他。
It was in the park that i met him this morning.4、正是今天早上我在公园里遇见了他。
It was this morning that i met him in the park.5、今天他没去上学是因为他生病了。
It was because he was ill that he didn’t go to school.
