Now, the leader has asked a group of students to do what they can to save the earth.
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/Now+-the-leader-has-asked-a-group-of-students-to-do-what-they-can-to-save-the-earth.=["Now", ",", "the", "leader", "has", "asked", "a", "group", "of", "students", "to", "do", "what", "they", "can", "to", "save", "the", "earth", "."][{"i": 0, "s": [0, 2], "r": "固定搭配", "e": [2, 20], "d": {"poses": [0, 1], "piece_poses": [0, 1]}}, {"i": 14, "s": [5, 6, 10, 11], "r": "动词固定搭配", "e": [6, 10, 11, 20], "d": {"poses": [1, 3], "piece_poses": [0, 1, 2, 3]}}, {"i": 30, "s": [7, 8, 9], "r": "名词短语", "e": [8, 9, 10], "d": {"poses": [2], "piece_poses": [0, 1, 2]}}, {"i": 37, "s": [12, 13], "r": "名词性从句", "e": [13, 15], "d": {"poses": [1], "piece_poses": [0, 1]}}][{"s": 0, "r": 6, "e": 2, "t": 2}, {"s": 2, "r": 3, "e": 4, "t": 2}, {"s": 4, "r": 22, "e": 5, "t": 2}, {"s": 5, "r": 9, "e": 6, "t": 2}, {"s": 6, "r": 3, "e": 10, "t": 2}, {"s": 7, "r": 3, "e": 10, "t": 2}, {"s": 7, "r": 3, "e": 8, "t": 2}, {"s": 8, "r": 13, "e": 9, "t": 2}, {"s": 9, "r": 3, "e": 10, "t": 2}, {"s": 10, "r": 13, "e": 11, "t": 2}, {"s": 11, "r": 10, "e": 20, "t": 2}, {"s": 11, "r": 20, "e": 15, "t": 2}, {"s": 11, "r": 9, "e": 12, "t": 2}, {"s": 12, "r": 21, "e": 13, "t": 2}, {"s": 13, "r": 3, "e": 14, "t": 2}, {"s": 14, "r": 22, "e": 15, "t": 2}, {"s": 15, "r": 5, "e": 20, "t": 2}, {"s": 15, "r": 13, "e": 16, "t": 2}, {"s": 16, "r": 10, "e": 20, "t": 2}, {"s": 16, "r": 9, "e": 17, "t": 2}, {"s": 17, "r": 3, "e": 20, "t": 2}]{"pred": [4, 6, "谓语动词短语(复合结构)", "has "], "subj": [2, 4, "主语", "the leader"], "comps": [[6, 10, "宾语", "a group of students"], [10, 20, "宾补(to do.不定式)", "to do what ••• earth."]]}{"pred": [4, 20, "谓语动词短语(复合结构)", "has asked ••• {宾补}"], "subj": [2, 4, "主语", "the leader"], "comps": [[6, 10, "宾语", "a group of students"], [10, 20, "宾补(to do.不定式)", "to do what ··· earth."]]}{"coos": [], "c": null, "e": 20, "subs": [{"coos": [], "c": 1, "e": 20, "subs": [{"coos": [], "c": 2, "e": 15, "subs": [], "s": 12, "r": "宾语从句"}], "s": 2, "r": "主句"}], "s": 0, "r": "固定搭配"}
sentence Now, the leader has asked a group of students to do what they can to save the earth. /Now+-the-leader-has-asked-a-group-of-students-to-do-what-they-can-to-save-the-earth.= d1e9388c-e96b-478f-bccd-fa37dffe879b 1 1
暂无语法

可尝试扩展句子。越复杂的句子，分析结果越丰富。

[[0, 2], [2, 20]]
[]

副词 + 句子, 构成状语前置结构

[[5, 6], [6, 10], [10, 11], [11, 20]]
[]

ask + sb. + to + do. + (sth.)

[[7, 8], [8, 9], [9, 10]]
[]

a + group + of + sth.

[[12, 13], [13, 15]]
[]

what + sent-no-obj.①, 整体作名词性从句; 其中 sent-no-obj.① 表示“从句-缺失宾语”, sent-no-obj.① 中的助动词后省略与前文重复的实义动词, what 为该实义动词的宾语被抽离后前置

sent-no-obj.①  当前为 they can

[[3, 4]]
[]

leader

n. 领导者
[[11, 12], [12, 15]]
[]

[[16, 17], [17, 20]]
[]

save + the + earth

v. 保护地球; 拯救地球
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Now, the leader has asked a group of students to do what they can to save the earth.

这是一个复杂句。

主句
the leader has asked a group of students to do what they can to save the earth.
这是一个陈述句，其时态为现在完成时。
成分划分
the leader主语 has asked ••• {宾补}谓语动词短语(复合结构) a group of students宾语 to do what ··· earth.宾补(to do.不定式)
谓语动词的状语、补语、伴随语:
Now,
从句
what they can

这是一个宾语从句，其时态可以是一般现在时、一般将来时。

其满足特殊句型： 。详情请参考下文具体介绍。

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