Simple Complex Compound

Simple	Complex	Compound
*Sub…….to+verb... Ex: We read to learn	*Sub………..so that + sub+can/could+verb….. Ex. We read so that we can learn	*Sub…..and +sub+can/could+verb….. Ex. We read and we can learn.
*In spite of / despite …….., sub + verb…… Ex: In spite of his poverty, he is honest.	*Though/ Although + Sub+ verb……, sub + verb…… Ex: Though he is poor, he is honest.	*Sub+ verb………… but+sub+verb…… Ex: He is poor but he is honest.
* (verb+ing)……….. Sub+verb…………… Ex: Reaching home, I took my meal.	*As/since/when+sub+verb… Sub+verb……………… Ex: As I reached home, I took my meal.	*Sub+verb……and so+ Sub+verb…………… Ex: I reached home and so I took my meal.
*By + ( verb+ing)+.. Sub+verb…………… Ex: By reading good books, we can enrich our knowledge.	*If+ sub+ verb+ …….. Sub+verb………………. Ex: If we read good books, we can enrich our knowledge.	*sub+ verb+ ……..and Sub+verb………………. Ex: We read good books and we can enrich our knowledge.
*Without+(verb+ing)… Sub+verb…………… Ex: Without reading newspaper, we cannot learn general knowledge.	*If+ sub+verb(negative)… Sub+verb………………… *Unless+sub+verb+……… Sub+verb………………… Ex: Unless we read newspaper, we cannot learn general knowledge.	*Verb…………or+ sub+verb…… Ex: Read newspaper or we cannot learn general knowledge.
*Sub+verb…too…to Ex: He is too weak to walk.	*Sub+verb………so……… that+sub+cannot………… Ex: He is so weak that he cannot walk.	*Sub+verb……very….and +sub+cannot…………. Ex. He is very weak and he cannot walk.
*Because of/ Due to/owing to……… sub+verb……… Ex. Because of his illness, he did not go to school.	*As/Since+sub+verb……, Sub+verb………………… Ex. As he was ill, he did not go to school.	*Sub+verb+…………… And+sub+verb………. Ex. He was ill, he did not go to school.
*At the time/At that time of….,sub+verb…. Ex. At the time of his saying prayer, a thief entered his room.	*When+sub+verb………… Sub+verb………………… Ex. When he was saying his prayer, a thief entered his room.	*Sub+verb…………… And+sub+verb………… Ex. He was saying his prayer, a thief entered his room.
*কোন rules-এ না থাকলে Ex: Mother Teresa is a noble hearted person.	*Sub+who(ব্যাক্ত) …………… *Sub+which(বস্তু) …………… *Sub+where(জায়গা) ………. Ex: Mother Teresa who is a noble hearted person.	*Sub+verb+ ………and Sub+verb+…………… Ex: Mother Teresa is a person and she is noble hearted.