Here are some useful sentences for online lessons on Skype, Zoom or Hangouts:

Before the call starts...

- Can you join the call? / Are you ready to start?

- I’ll call you in 2 minutes. / I’ll call you back in 2 minutes. / I’ll call you in a moment. / I'll call you in a sec.

When you have problems...

- Can you hear me? / Do you hear me?

- I can’t hear you very well.

- Can you see me? / Do you see me?

When you want to share your screen:

- I'll share my screen with you now / Can you share your screen with me?

When you need the other person to activate their video:

- Can you turn the camera on, please?

When the other person is on mute:

- I think you are on mute. / Your microphone might be turned off.

When the other person's voice is breaking:

- You’re breaking up!

- The connection’s bad.

- Hold on. I'll hang up and call you right back.

When the call is lost:

- The call dropped. / We got cut off. 

When there is noise:

- Can you speak up, please?

- I hear some noise in the background / when you speak.

When you cannot understand:

- Can you speak more slowly, please?

- Can you repeat that last bit, please?

- I didn't get that. Could you say it again, please?

- Your voice is really low. Can you get closer to the microphone?

When you're late:

- I’m sorry, I’m late. / I’m sorry for being late.

When someone else is calling you:

- I need to take this call. / I’ve got to take this call.