问传递参数，如果未传递BASH，则忽略它。

EN

#!/usr/bin/env bash
case $BASH_VERSION in '') echo "ERROR: This must be run with bash, not sh" >&2; exit 1;; esac

# unconditionally, we always have a verb; assign to a variable then shift away
args=( --verb "$1" )   # this creates an array
shift                  # makes old $2 be $1, old $3 be $2, etc

# iterate over remaining arguments and add each preceded by '-a'
for arg in "$@"; do    # iterate over all args left after the shift
  args+=( -a "$arg" )  # for each, add '-a' then that arg to our array
done

# use the constructed array
runYourProgramWith "${args[@]}"

--verb "$1" \
    -a "$2" \
    ${3+ -a "$3" }