1、Do you understand?例句：Dear, do you understand? 亲爱的，你懂吗？
2、you see?例句：You see, Ive forgotten my key.“你懂吗，我忘记带我的钥匙了。”
3、Do you know?例句：Do you know anything about astronomy?你懂天文学吗？
4、Are you clear? 例句：So Chris, are you clear now? 那么，Chris，现在你明白了吗
5、Do you get it?例句：Two big ones and a small one do you get it? 两大一小，你懂不懂？
