When someone says, “I lost my train of thought“, they mean that they’ve forgotten what they were just thinking or saying. It’s like their thoughts were a train on a track, but they lost track of where the train was going.
Here are two examples in sentences:
Example 1:
“Sorry, I lost my train of thought,” Sarah said, as she tried to remember the point she was making in her presentation.
Example 2:
During the interview, Mike lost his train of thought and had to pause for a moment to gather his ideas again.
Now, let’s see two examples in a conversation:
Example 3:
Emma: Hi, Tom! You were saying something about your weekend trip?
Tom: Yes, Emma, it was really fun. We went to… Oh, wait, I lost my train of thought.
Example 4:
Lucy: Hey, John! Tell me more about the book you’re reading.
John: Well, it’s about this explorer who… Sorry, Lucy, I lost my train of thought.
So, when someone says “I lost my train of thought“, they’re saying that they’ve momentarily forgotten what they were saying or thinking. It’s a common phrase people use when they get distracted or lose focus during a conversation.