For , Since And Yet , Still Usages

FOR – since and yet – still usages.

□ For


|For usages |Examples |
|When we measure the duration of something – when we say how long |-I have known her for a long time. |
|something lasts.| |
|For + a period of time |- I have lived here for ten years.|
|To measure a period of time up to the present, we use the present | |
|perfect tense and not the present tense.| |
|The present tense with For refers to a period of time that extends|-How long are you here for? (Until when)|
|into the future. |-How long have you been here for? (Since when) |
|However, we don't use For withexpressions such as all day or all |-I was there all day. (Correct) |
|the time. |-I was there for all day.(Incorrect) |

□ In reality, we can use all verb tenses with For.

|Uses of For |Verb Tense|
|Example sentence | |
|They exercise for twohours every day. |Present tense |
|They are exercising for three hours today |Present continuous...