PETS－2語法講解(33)
'不定式的特殊句型so as to 1） 表示目的；它的否定式是so as not to do。Tom kept quiet about the accident so as not to lose his job.湯姆對事故保持沉默是為了不丟掉他的工作。Go in quietly so as not to...'
PETS－2語法講解(29)
'一般現(xiàn)在時的用法 1) 經(jīng)常性或習慣性的動作，常與表示頻腮度的時間狀語連用。時間狀語：every…, sometimes, at…, on SundayI leave home for school at 7 every morning. 2) 客觀真理，客觀存在，科學事實...'
