英文grammar問題

1.It's time that the world starts realizing we all share the same space.

"that-clause" is a noun clause that can function as subject, object, complement or appositive in a sentence.

"realize" is one of the "reporting" verbs that can be followed by a that-clause acting as the direct object.

Examples:
The world realizes that we all share the same space. (realize as main verb)
The world starts to realize that we all share the same space. (as infinitive)
The world starts realizing that we all share the same space. (as gerund)

"that we all share the same space" is a noun clause functioning as the object of the verb "realize" in the above examples.

The verb "start" is the verb of the main clause while the verb "share" is the verb of the dependent that-clause.

2.The scientists say (that) pollution from Asia is likely leading to stronger cyclones in the mid latitudes of the Pacific.

For the same reason as (1), "say" is also a reporting verb that can be followed by a that-clause. The conjunction "that" can be omitted in the "reporting" structure.

2014-09-16 01:21:06 補充：
1. It's time that the world starts realizing (that) we all share the same space.

The conjunction "that" is omitted in the sentence.

2014-09-16 09:35:02 補充：
Normally, the expression "it is time that ..." is in subjunctive mood (虛擬語氣) ~ 後面的從句謂語動詞 要用過去式 past tense 或用 should 加動詞原形，但should不可省略。

改正: It's time that the world started realizing (that) we all share the same space.

2014-09-17 10:05:18 補充：
補充:
1. 係, 如果個verb係reporting verb，後面個 that 一般係可以省略。
2. 就 noun clause 而言，that 可以省略的情況:
~ as direct object of verb
~ as 主語補語 The problem is (that) ...
~ as 形容詞補語 I'm afraid (that)
~ after dummy-it & adj/noun It is clear/a surprise (that)

唔可以省略的情況:
~ as subject of verb