$1.$ happy

`→` V $($ Miêu tả $)$ `+` Adj

$2.$ invitation

`→` The `+` N

$3.$ describe

`→` Can `+` S `+` V_inf `+` O $?$

$4.$ dangerously

`→` V `+` Adv

$5.$ orphans

`→` A lot of `+` N $($ s $)$ 

`→` Orphan ( n ) `:` Trẻ mồ côi

$6.$ unsuccessful

`→` Be `+` Adj

`→` Unsuccessful ( adj ) `:` Bất thành công

$7.$ humorousness

`→` Of `+` N

`→` Humorousness ( n ) `:` Tính hài hước

$8.$ extremely

`→` Be `+` Adv `+` Adj

$9.$ electrical

`→` Adj `+` N

`1.` happy

`\text{→ĐT miêu tả + adj}` 

`2.` invitation

`\text{→mạo từ + noun}`

`3.` describe

`\text{Can + S + Vinf +...}`

`4.` dangerously

`\text{→V + adv}`

`5.` orphans

`\text{→a lot of + plural noun}`

`\text{→orphan(n): trẻ mồ côi}`

`6.` unsuccessful

`\text{→be + adj}`

`\text{→unsuccessful(adj): bất thành công}`

`7.` humorousness

`\text{→giới từ + noun}`

`\text{→humorousness(n): tính hài hước}`

`8.` extremely

`\text{→be + adv + adj}`

`9.` electrical

`\text{→adj + noun}`