28
grammar
× 15 |
5
adjectives
× 3 |
2
questions
× 2 |
1
word-difference
|
28
meaning
× 8 |
5
verb-forms
× 2 |
2
relative-clauses
|
1
mathematics
|
21
difference
× 7 |
4
vocabulary
× 2 |
2
verbs
|
1
nominalization
|
21
tense
× 3 |
4
nouns
× 2 |
2
past-participles
|
1
articles
|
16
past-tense
|
4
indirect-objects
|
2
american-english
|
1
present-continuous
|
15
idioms
|
4
word-request
|
2
learning
|
1
phrase-meaning
|
10
meaning-in-context
× 6 |
4
direct-objects
|
2
plural-forms
|
1
phrasal-verbs
|
9
usage
× 2 |
3
zero-article
|
2
deverbal
|
1
definite-article
|
9
grammaticality
× 2 |
3
adjuncts
|
1
conjunctions
× 2 |
1
pronouns
|
9
conditional-constructions
|
3
headlinese
|
1
grammatical-number
|
0
word-order
|
8
word-usage
× 6 |
3
predicate
|
1
present-tense
|
0
passive-voice
|
7
word-choice
× 5 |
3
modal-verbs
|
1
phrase-request
|
0
syntax
|
6
legalese
|
2
prepositions
× 2 |
1
word-meaning
|
0
clauses
|