1. 现在完成时 (Present Perfect):
– “Since I have been working here, I have made many friends.”
– 在这个例子中，”have been working” 是现在完成时的被动语态，而 “made many friends” 是现在完成时的主动语态。
2. 现在完成进行时 (Present Perfect Continuous):
– “Since we have been talking, we have decided to go to the beach together.”
– 在这个例子中，”have been talking” 是现在完成进行的主动语态，而 “decided to go to the beach together” 是现在完成进行时的复合结构。
3. 一般现在时 (Simple Present):
– “Since you are a student, you should study hard.”
– 在这个例子中，”are a student” 是现在时的单数第三人称主语，而 “should study hard” 是现在时的虚拟语气。
4. 一般过去时 (Simple Past):
– “Since he was a teacher, he taught many students.”
– 在这个例子中，”was a teacher” 是一般过去时的单数第三人称主语，而 “taught many students” 是一般过去时的简单过去时。
5. 将来时 (Future Tense):
– “Since I will be leaving tomorrow, I need to pack my bags.”
– 在这个例子中，”will be leaving” 是将来时的被动语态，而 “pack my bags” 是将来时的主动语态。
6. 条件句 (Conditional Sentences):
– “Since it rains tomorrow, we will stay indoors.”
– 在这个例子中，”it rains” 是条件句中的主语，而 “we will stay indoors” 是条件句中的谓语。
7. 状语从句 (Adverbial Clauses):
– “Since she is very tired, she goes to bed early.”
– 在这个例子中，”she is very tired” 是状语从句中的主语，而 “goes to bed early” 是状语从句中的谓语。
8. 非限定性定语从句 (Non-restrictive attributive clauses):
– “Since he is a good friend, he always helps me when I need him.”
– 在这个例子中，”he is a good friend” 是非限定性定语从句中的主语，而 “he always helps me when I need him” 是非限定性定语从句中的谓语。
“since” 后面接的动词形式取决于句子的时态、语境以及是否需要强调某个动作的持续性或结果。在使用时，要确保语法正确，并根据需要选择合适的时态和语态。