Virtual machine cannot be solved by internet

Because I want to learn python, the teacher recommended the virtual machine installed Ubuntu system environment to develop the Python program, the teacher sent me a virtual machine file, is installed and updated to the latest Ubuntu system. I've got a copy open directly on the virtual machine. But the problem came up and I couldn't communicate with my virtual machine. There are three modes (bridging, NAT, host only) that are not up to the network. The various settings are still not ping. Makes me very depressed.

When I set up a bridging mode, this box appears in the lower right corner of VMware:

I don't know much about the internet, I feel a little bit blindfolded.

Asked the teacher, the teacher can not solve.

The teacher later said to send me I surf the internet for you to check. My reply to the teacher is that I check it on the Internet myself. Is the student who is a software can't solve this small problem?

Internet search for a long time, finally found the problem:

I had a lot of other systems in the virtual machine before, so I could do all kinds of experiments (various target drone).

This is the system that was previously installed in my virtual machine:

I have access to the Internet in my dorm room for virtual machines. Come to the classroom all systems are unable to surf the internet.

The reason I was on the Internet was when I installed the virtual machine

Here manually set the IP, very early things up. The time is long to forget. The Nets in the dorm and the school nets are not in the same network segment. So the IP that was set before is not. I looked at the classmate's virtual machine IP settings. Change their own to the same network segment with the students will be able to surf the Internet.

Altogether two places were changed:

Summarize:

Virtual machine can not surf the Internet, the most answer on the internet is to set up the network adapter mode, sometimes, not only these settings will cause the virtual machine cannot surf the Internet (there may have been a pit before).

Virtual machine cannot be solved by internet