1.am afraid to 固定结构 /am afraid of doing sth
2.to laugh at I(t's not +adv to do)
3.memorizing (difficulties in doing sth)
4.to make up 不定式结构
5.complete 这里做 adj(形容词) 修饰 sentences 所以不变
1.am afraid to 固定结构 /am afraid of doing sth
2.to laugh at I(t's not +adv to do)
3.memorizing (difficulties in doing sth)
4.to make up 不定式结构
5.complete 这里做 adj(形容词) 修饰 sentences 所以不变