介词的用法归纳

早、午、晚要用 in

例：in the morning 在早上

in the afternoon 在下午

in the evening 在晚上

in the day 在白天

at 黎明、午、夜、点与分

例: at dawn, at daybreak 在黎明时候

at noon 在中午

at night 在夜间

at midnight 在午夜

一般将来时应用

do/does 的一般将来时态形式：(shall/will) do

do/does 的一般将来时态的被动语态：(shall/will) be done

过去将来时

should/would+动词原形

do/does 的过去将来时态形式：(should/would) do

do/does的过去将来时态的被动语态：(should/would) be done

过去进行时

do/does 的过去进行时态形式：(was/were) doing

do/does 的过去进行时态的被动语态：(was/were) being done

A son never thinks his mother ugly,and a dog never shuns its owner’s home however shabby it is.儿不嫌母丑，狗不嫌家贫。

The frog in the well knows nothing of the great ocean. 井底之蛙，不知大海。

The fox may grow grey, but never good. 狐狸毛色可变灰，但是本性难移。

When the fox says he is a vegetarian, it’s time for the hen to look out. 狐狸说它吃素的时候，母鸡就得注意。

A speck of mouse dung will spoil a whole pot of porridge. 一粒老鼠屎，坏了一锅粥。

1、The children were running on the playground as fast as they can.

改：can-could

解释：主句是过去进行时，从句也应该是过去时，保持一致。

2、Since her husband had died, so she had to support her family.

改：把so去掉。

解释：since表示原因，不需要so再来表示结果。两个词不能同时用在一个句子中。

3、He won't go out until his mother will come.

改：will come-comes

解释：主句是一般将来时，until引导的时间状语从句用现在时表示将来，改为第三人称单数。

4、He was very foolish that he didn't pass such an easy exam.

改：very-so

解释：so...that，如此……以至于。

5、Tom had gone out as soon as his mother got home.

改：had gone-gone

解释：主句用一般过去时。

6、It was three months since he came to our school.

改：was-is

解释：从过去到现在的一段时间，用现在时。

7、The platground of our school is larger than their school.

改：加上 that of (their school)。

解释：操场要和操场作比较，不是跟学校比。用that来指代。

8、The streets in Nanjing are wider than Shanghai.

改：those in (Shanghai)。

解释：街道要和街道比较。用those来指代复数的名词。