To grasp “the Present Perfect” and the Irregular verbs' past tense &past participle tense.
To grasp “the Present Perfect” and the Irregular verbs' past tense &past participle tense.
掌握现在完成时态以及不规则动词的过去时态和过去分词。
To grasp “the Present Perfect” and the Irregular verbs' past tense &past participle tense.
掌握现在完成时态以及不规则动词的过去时态和过去分词。