2. ใช้ought to have + กริยาช่องมาที

2. ใช้ought to have + กริยาช่องมาที่3 เมื่อต้องการแสดงอดีตกาล(past)แต่จะมีความหมายไปในทำนองว่า ควรจะได้ทำสิ่งนั้น แต่ไม่ได้ทำ เช่น You ought to have helped him last week.

Results (English) 1:

2. ought to have + past participle channel 3. To show the past tense (past) but that would have meant the melody. Should have done but did not do so, You ought to have helped him last week.

Results (English) 2:

2. Use ought to have + 3-channel verbs To show past tense (past) but it's meant to have done that, but not do that, You ought to have helped him last week.

Results (English) 3:

2.used has " Express the words of the past, the words of the past, but it means that you should do something, but not like this, you should help him. Last week.