`1.` She was lazy, so she got bad marks

`->` Since she was lazy, she got bad marks.

`+ Gth:` As/Since + mệnh đề (clause)

`2.` Mary couldn't go to the party because of her sickness

`->` Because Mary was sick, she couldn't go to the party

` +Gth:` Because + S + V + (O).

She was lazy, so she got bad marks

⇒ Since she was lazy, she got bad marks. ( Vì cô ấy lười nên cô ấy bị điểm kém)

⇒ Since=Because=For,...: Vì, do

⇒ Thì qkđ ở động từ tobe: S+was/were+....

Mary couldn't go to the party because of her sickness

⇒ Because Mary was sick, she couldn't go to the party. ( Vì Mary bị ốm nên cô ấy không thể đến bữa tiệc).

⇒ Could là quá khứ của can

⇒ Thì qkđ với động từ tobe: S+was/were+....

Chúc bn hok tốt!!!

`giahan27511`