unsubstantial是一个形容词，意为“不实在的，脆弱的，无根据的”。它来自于拉丁语的词根substantia，意为“物质，实质”。在英文中，它通常用来形容事物缺乏真实性或重要性。

怎么读（音标）

unsubstantial的音标为[ˌʌnsəbˈstænʃl]。

用法

1. 作为形容词，unsubstantial可以修饰名词或代词。

2. 在句子中通常位于名词之前。

例句1-5句且中英对照

1. The evidence against him was unsubstantial and could not be used in court.

对他的指控证据不足以在法庭上使用。

2. Her arguments were unsubstantial and lacked solid evidence.

她的论点缺乏实质性证据。

3. The company's financial situation was quite unsubstantial, leading to its bankruptcy.

公司的财务状况非常脆弱，导致了破产。

4. His promises were just empty words, unsubstantial and unfulfilled.

他的承诺只是空话，没有实质性和兑现。

5. The rumors about the celebrity's death were unsubstantial and caused unnecessary panic.

关于这位名人死亡的谣言毫无根据，却引发了不必要的恐慌。

同义词及用法

1. Insubstantial：形容物体缺乏实质性或重要性，与unsubstantial的意思相近。

例句：The evidence presented in court was insubstantial and could not prove the defendant's guilt.

2. Flimsy：形容物体脆弱、不坚固或不可靠。

例句：The bridge collapsed due to its flimsy structure.

3. Baseless：指缺乏事实依据或根据的论点或指控。

例句：The accusations against him were completely baseless and had no evidence to support them.

4. Hollow：形容物体内部空虚、空洞，也可以用来指言语或承诺缺乏实质性。

例句：His promises were hollow and could not be trusted.

5. Unrealistic：指不切实际、不现实的想法或计划。

例句：Their business proposal was unrealistic and had no chance of success.

编辑总结

unsubstantial是一个常用的形容词，用来形容事物缺乏真实性、重要性或根据。它可以与其他近义词如insubstantial、flimsy等互换使用。在写作中，建议使用该词时要注意搭配合理，以免造成歧义。