Ms Sue I am really studying hard I have one more will you check for me?
Lew wasn't sure he had locked the front door so after him and Marian left for their vacation at nine o'clock they came back at 9:30.
Do I need any commas?
You need a comma after door and after 9:00.
Also -- him is the wrong pronoun. You need the subject pronoun, "so after he and Marian . . ."
A third correction -- be consistent -- "at 9:00, they came back at 9:30."
Yes, you need a comma in this sentence. The correct sentence would be:
Lew wasn't sure he had locked the front door, so after him and Marian left for their vacation at nine o'clock, they came back at 9:30.
To determine whether you need any commas in the given sentence, let's analyze the structure and content.
The sentence in question is: "Lew wasn't sure he had locked the front door so after him and Marian left for their vacation at nine o'clock they came back at 9:30."
To identify where commas might be needed, let's break down the sentence into separate clauses:
1. Main clause: "Lew wasn't sure he had locked the front door."
2. Dependent clause: "so after him and Marian left for their vacation at nine o'clock."
3. Dependent clause: "they came back at 9:30."
Generally, when we have a dependent clause at the beginning or middle of a sentence, we often use commas to separate it from the main clause. However, in this case, the dependent clause in the middle of the sentence does not require a comma because it does not interrupt the flow of the sentence.
Therefore, in the given sentence, you do not need any commas. It should be written as: "Lew wasn't sure he had locked the front door so after him and Marian left for their vacation at nine o'clock they came back at 9:30."
Keep in mind that comma usage can sometimes depend on the specific style guide or writing conventions you are following, so it's always a good idea to consult a style guide if you have one available to you.